Best Buy Up to 10x Magnifying Glass Headset Loupe Magnifier Lens Visor with 2 LED Light Reviews

• Warnings: Do not put he lens under direct sunshine. The sunshine may focus the lens so that fire is caused. Do not watch the sunshine through lens. In addition, sometimes you watch the matter reflecting bright light with lens, your eyes will be offended or may be damaged.
• Attention: The person wearing nearsighted spectacles should let the focusing distance farther. For the presbyope or farsighted person, the person not wearing spectacles should let the focusing distance farther. Do not put this product near fire source or at the place with high temperature. Sometimes the lens or the frame may deform or deteriorate for heat Do not drop or bend the magnifier, or shock it with b force. It is very dangerous to cut the lens. Clean the lens lightly with the soft cloth for glasses or face tissues when it becomes dirty

Up to 10x Magnifying Glass Headset Loupe Magnifier Lens Visor with 2 LED Light

Features:
1. With detachable light source box, which is easy to take out
2. The angle of lamplight can also be adjusted freely
3. The lens assembly parts are added to two; you can also overlap tow lenses.
4. You can also use this product even if you wear glasses
5. Dial adjustment headband conforms to comfortably fits most head sizes
6. There two parallel lens assembly parts, and you can also overlap tow lenses for getting a highter magnifying multiple.
7. 2 Bright LED Bulb to illuminate Viewing Field
8. It can be quite easily used under the following conditions:
     Operate or read at a dim or dark place;
     Interesting work such as carving, handcraft and sewing.
     Assemble or repair small fitting;
     Check the finished product.

Specifications:
1. Material of  lens: Acrylic resin(Processed by crack-proof rigid coating)
2. Main Materials: ABS resin, PP resin
3. Fixed lens magnifier: 4X-89 x 29 mm(L x W)
4. Flip lens magnifier: 4X-89 x 29 mm(L x W)
5. Round Single-eye magnifier: 5X -29 mm(dia)
6. Power by: 2 x AAA batteries (Not included)
7. Color: Black
8. Size:9.84 x 7.80 x 2.56 inch / 25 x 19.8 x 6.5 cm (L x W x H)
9. Adjustable perimeter of headband: 21.26-27.17inch/54-69cm
10.Weight:9.81oz/278g

Package includes:
1 x Up to 10X Magnifying Glass Headset Loupe Magnifier Lens Visor with 2 LED Light

Best Price Headband Eye Glass Flip Loupe Magnifying Glass VISOR Magnifier LED Reviews

Lenses angle is adjustable.
LED lights angle is adjustable.
LED lights part could be taken out separately for single use.
Specifications:
Color: black
Button Batteries included: LR1130 * 3
Package size: 23 * 19 * 5cm (9 * 7.5 * 2.0inches)
Package weight: 420g/14.8oz
5 lenses includes:
Magnification Field of View
1.0X 250 ~ 350mm
1.5X 200 ~ 300mm
2.0X 175 ~ 275mm
2.5X 150 ~ 250mm
3.5X 80 ~ 120mmv
Item Includes:1 * Headband
5 * Lenses
1 * User manual
3 * LR1130 installed batteries

Best Buy Donegan CO-5 Clip-On Binocular Headband Magnifier, 2.5x Magnification, 5 Diopers, 8" Focal Length Reviews

• Binocular magnifier can be used with included frame, or clipped onto prescription eyeglasses to provide hands-free magnification and viewing for a variety of applications, such as jewelry-making, watch-making, needlework, artwork, fly-tying, electronic inspection, book-reading, print inspection, and stamp-collecting
• Available in multiple dioptric strengths that provide a specific magnification power (X), depending on the distance from the object (focal length)
• A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8")
• Dual acrylic lens system has optical-grade lenses ground and polished into prismatic lenses for quality, clarity, and durability
• Can be used with included frames, or clipped onto prescription eyeglasses

Donegan CO-5 Clip-On Binocular Headband Magnifier, 2.5x Magnification, 5 Diopers, 8" Focal Length

The Donegan clip-on, binocular, hands-free magnifier with frame has a dual acrylic lens system with optical-grade lenses ground and polished into prismatic lenses, and is available in multiple colors, and multiple dioptric strengths (indicated by the number in the model) which provide specific magnification power (X) at a specified distance from object. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications such as jewelry-making, watch-making, needlework, artwork, electronic inspection, fly-tying, book-reading, print inspection, and stamp-collecting.

The clip-on, binocular, lightweight (0.417 lbs) magnifier features binocular lenses that come with a frame and clip that attaches to the frame or eyeglasses. The magnifier can be worn over prescription or safety eyeglasses, and has the ability to flip up when not in use. Spring-loaded pivot screws hold the headband in a raised or a forward-facing position. The magnifier is available in assorted colors such as black, and blue. It comes housed in a protective shell and carrying case. It has a one-year limited warranty. Diopter (D) is a technical term for the measurement of the light curvature and thickness of a lens. A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8”). The higher the diopter, the more magnification a lens can provide. As magnification increases, distance to the object (focal length), and field of view (diameter, or narrowness of view) decrease. Magnifiers and prescription eyeglasses have a diopter value, such as 1.5 or 2. The dioptric strength of an accessory lens, such as prescription eyeglasses or an eye loupe, must be added to the dioptric strength of the magnifier to calculate total magnification. Magnifiers are devices used to enlarge the visual appearance of an object or image. Magnifiers come in a variety of styles such as hand-held, headband, standing, clip-on, eye loupe, and those that hang in a necklace form, or fit in a trouser pocket. Magnifiers are commonly made of plastic or glass. They can have one or more lenses with varying magnification abilities, and can have a binocular configuration with a single lens, or two separate lenses. They are sometimes used with LED or fluorescent light sources to help control viewing capabilities. Magnifier ability is often expressed as magnification at a specific length. For example, 1.75X at 14” means that when a magnifier is held at 14” from a viewer’s eyes, the object will be magnified 1.75 times (X) its actual size. As magnification increases, viewing areas and focal length decrease. Magnifiers sometimes have a diopter number, expressed as + or - D, which is a measurement of strength (or power) of the lens. Some magnifiers are marked with a dioptric number on the lens. A high diopter number has a higher magnification than a low diopter number. Aspheric magnifiers, unlike spheric magnifiers, produce a sharp image to the edge of the lens for less distortion. Magnifiers are widely used in jewelry inspection and fabrication, watch-making,

Determining Magnification Diopter Magnification Focal length (Distance from object) Sample view 20/20 vision 20" (50.8cm) 2-diopter lens 1.50X 20" (50.8cm) 3-diopter lens 1.75X 14" (35.56cm) 4-diopter lens 2.00X 10" (25.4cm) 5-diopter lens 2.50X 8" (20.32cm) 7-diopter lens 2.75X 6" (15.24cm) 10-diopter lens 3.50X 4" (10.16cm)

needlework, artwork, fly-tying, electrical inspection, reading, print inspection, and stamp-collecting.

Donegan Optical manufactures and distributes precision visual devices for hobbyists and professionals in industry, home, office and crafts applications. The company was founded in 1952 and is headquartered in Lenexa, Kansas.

What’s in the Box?

• Clip-on binocular magnifier
• Frame
• Fitted, plastic carrying case
• Instruction manual

Best Buy Donegan P-949 Magna-Pak Double Folding Pocket Magnifier, 4x, 5x, or 9x Magnification Reviews

• Pocket magnifier provides magnification and viewing for a variety of applications such as jewelry-making, watch-making, needlework, artwork, fly-tying, electronic inspection, book-reading, print inspection, and stamp-collecting
• Available in multiple dioptric strengths that provide a specific magnification power (X), depending on the distance from the object (focal length)
• A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8")
• Double, round lens system that slides into case for storage, and fits in a trouser pocket or a purse
• Durable, dustproof, plastic, round case that slides open for use as a handle, and clicks closed to protect the magnifier when not is use

Donegan P-949 Magna-Pak Double Folding Pocket Magnifier, 4x, 5x, or 9x Magnification

The Magni-Pak pocket magnifier has double monocular, round, optical-grade, prismatic lenses, and is available in multiple magnification powers (X) at a variety of focus lengths (distance to object), and comes housed in a sliding, protective, plastic case. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications such as jewelry-making, watch-making, needlework, artwork, electronic inspection, fly-tying, book-reading, print inspection, and stamp-collecting.

The Magni-Pak magnifier features a durable, dustproof, plastic, round case that slides open for use as a handle, and clicks closed to protect the magnifier when not in use. The magnifier has a double, round lens system that has two lenses that tuck into a case for storage, and fits in a trouser pocket or a purse. A round, monocular lens is housed by a round-shaped plastic, protective perimeter for durability. Its optical-grade lens has been ground and polished into a prismatic lens for clarity. It weighs 2.67 oz., and has a one-year limited warranty.

Diopter (D) is a technical term for the measurement of the light curvature and thickness of a lens. A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8”). The higher the diopter, the more magnification a lens can provide. As magnification increases, distance to the object (focal length), and field of view (diameter, or narrowness of view) decrease. Magnifiers and prescription eyeglasses have a diopter value, such as 1.5 or 2. The dioptric strength of an accessory lens, such as prescription eyeglasses or an eye loupe, must be added to the dioptric strength of the magnifier to calculate total magnification.

Magnifiers are devices used to enlarge the visual appearance of an object or image. Magnifiers come in a variety of styles such as hand-held, headband, standing, clip-on, eye loupe, and those that hang in a necklace form, or fit in a trouser pocket. Magnifiers are commonly made of plastic or glass. They can have one or more lenses with varying magnification abilities, and can have a binocular configuration with a single lens, or two separate lenses. They are sometimes used with LED or fluorescent light sources to help control viewing capabilities. Magnifier ability is often expressed as magnification at a specific length. For example, 1.75X at 14” means that when a magnifier is held at 14” from a viewer’s eyes, the object will be magnified 1.75 times (X) its actual size. As magnification increases, viewing areas and focal length decrease. Magnifiers sometimes have a diopter number, expressed as + or - D, which is a measurement of strength (or power) of the lens. Some magnifiers are marked with a dioptric number on the lens. A high diopter number has a higher magnification than a low diopter number. Aspheric magnifiers, unlike spheric magnifiers, produce a sharp image to the edge of the lens for less distortion. Magnifiers are widely used in jewelry inspection and fabrication, watch-making, needlework, artwork, fly-tying, electrical inspection, reading, print inspection, and stamp-collecting.

Donegan Optical manufactures and distributes precision visual devices for hobbyists and professionals in industry, home, office and crafts applications. The company was founded in 1952 and is headquartered in Lenexa, Kansas.

What’s in the Box?

• Magni-Pak magnifier with double lens system
• Carrying pouch
• Instruction manual

Watch Repair Head Headband Glasses Magnifier Loupe 10X With LED Light Reviews

It is very inconvenient to use traditional clock or watch repair magnifier which needs to be clamped by eyelids and may affect the repair quality of precision instruments.This magnifier can solve this problem to make it easier and more accurate to repair precision instruments.

Specifications:
Colors: Black
Item weight: 55g
Package Size: 27 * 20.3 * 6.5cm
Package Weight: 280g

Package including:
1 * Head Magnifier

Best Buy SE Magnifier, Headband Lighted & 20X magnifier Reviews

Bino Head Magnifier & 20X Dual Loupe Combo Illuminated10X 20X Dual Loupe. This is a new double lens folding pocket magnifier. Both lenses are 10X and you can combine the two for a total of 20X power. The glass lenses used in this folding pocket magnifier provides durability for a long life. The durable plastic swing-away case not only provides a protective cover for the lenses, but serves as a handle as well. Each 10X lens has a 1" (25 mm) focal distance. When combined for a total of 20X, it has a 1/2" (13 mm) focal distance. Measures approximately 2 3/16" x 1 1/2" x 1" (56 x 38 x 25 mm) closed and 3 15/16" x 1 1/2" x 1" (100 x 38 x 25 mm) open. Lighted Magnifying VisorThis is a new lighted magnifying visor. This magnifier has many features and is easy to operate. It is lightweight and you can get a clear solid view in wide sight through the double lens' two square glass. The headband has a hook and loop strap so it is easy to adjust to the size of the user's head. It has two lights built on the side of the magnifier. It uses 4 AAA batteries (not included). The magnifier lifts up so you do not have to take it off. It leaves your hands free to work. By just sliding down one or both of the lens accessories the magnification changes. This magnifier is used by both amateurs and professionals for mold making, photography, jewelry and electronic repair. The lenses are plastic. Lens powers are: Single lens power is 1.8X. Lens plus pull down lens power is 2.3X. Lens plus auxiliary loupe power is 3.7X. All three have a combined power of 4.8X.

Best Buy Bausch & Lomb Magna Visor with Lens Set Reviews

• Comfortably adjusts to all head sizes
• Can be worn over prescription or safety glasses
• Soft, padded headband removes for cleaning

Bausch & Lomb Magna Visor with Lens Set

Quality visor that allows hands-free viewing.

Brand New HQ Eye Loupe Magnifier Stainless Steel Wire Head Band Watch Jewelry Repair Tool Reviews

• This is a high quailty wire spring type holder (Head Band) for eye loupe.
• Great for jewelers and watchmakers.
• Made of Stainless Steel Material.
• One piece ,Eye loupe not included.
• New,Never Used Before.

Brand New HQ Eye Loupe Magnifier Stainless Steel Wire Head Band Watch Jewelry Repair Tool

This is a high quailty wire spring type holder (Head Band) for eye loupe.Great for jewelers and watchmakers. Made of Stainless Steel Material. One piece. Eye loupe not included.The listing is for only one set.

Best Price Aven 26505-LED Mighty Mag Led Magnifying Lamp with 80 High Powered LED Lights, 2.25x Magnification, 5 Diopter, 32" Spring Balanced Arm Reviews

• Lighted magnifier provides magnified viewing for a variety of applications such as jewelry making, watch making, needlework, artwork, fly tying, electronic inspection, book reading, print inspection, and stamp collecting
• 80 LED lights provide 20,000 hours of high-powered (1,000 lux) illumination to reduce eyestrain and to control brightness
• Large (7.5 x 6.2 inches [H x W]), clear, 5-diopter glass lens with 2.25X magnification for distortion-free viewing
• 32-inch, adjustable arm with concealed springs and tension adjustment knobs sets securely in many positions
• Comes with table attachment clamp for mounting

Aven 26505-LED Mighty Mag Led Magnifying Lamp with 80 High Powered LED Lights, 2.25x Magnification, 5 Diopter, 32" Spring Balanced Arm

The Aven 26505-LED Mighty Vue magnifying lamp with 80 high-powered LED lights (40 on each side) has a large (7.5 x 6.2 inches [H x W]), clear, 5-diopter glass lens with 2.25X magnification, and a 32-inch, adjustable arm with a mounting clamp. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications, such as jewelry making, watch making, needlework, artwork, electronic inspection, fly tying, book reading, print inspection, and stamp collecting.

This lighted magnifier features 80 high-powered LED lights (40 on each side) which provide 20,000 hours of high-powered (1,000 lux) illumination to reduce eyestrain, and to control brightness. A clear, 5-diopter glass lens with 2.25x magnification provides distortion-free viewing. The round, monocular lens is surrounded by a lightweight, plastic, protective perimeter. The magnifier has a raised switch on the top of the light to activate lighting. Concealed springs and tension adjustment knobs allow the adjustable arm to securely set in many positions. It comes with a table attachment clamp for mounting. The magnifier weighs 10 lb., and works with a 115V power source. Lightweight plastic housing protects the light. It has a one-year limited warranty against manufacturing defects.

A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8”). Diopter (D) is a technical term for the measurement of the light curvature and thickness of a lens. A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8”). The higher the diopter, the more magnification a lens can provide. As magnification increases, distance to the object (focal length), and field of view (diameter, or narrowness of view) decrease. Magnifiers and prescription eyeglasses have a diopter value, such as 1.5 or 2. The dioptric strength of an accessory lens, such as prescription eyeglasses or an eye loupe, must be added to the dioptric strength of the magnifier to calculate total magnification.

Magnifiers are devices used to enlarge the visual appearance of an object or image. Magnifiers come in a variety of styles such as hand-held, headband, standing, clip-on, eye loupe, and those that hang in a necklace form, or fit in a trouser pocket. Magnifiers are commonly made of plastic or glass. They can have one or more lenses with varying magnification abilities, and can have a binocular configuration with a single lens, or two separate lenses. They are sometimes used with LED or fluorescent light sources to help control viewing capabilities. Magnifier ability is often expressed as magnification at a specific length. For example, 1.75X at 14” means that when a magnifier is held at 14” from a viewer’s eyes, the object will be magnified 1.75 times (X) its actual size. As magnification increases, viewing areas and focal length decrease. Magnifiers sometimes have a diopter number, expressed as + or - D, which is a measurement of strength (or power) of the lens. Some magnifiers are marked with a dioptric number on the lens. A high diopter number has a higher magnification than a low diopter number. Aspheric magnifiers, unlike spheric magnifiers, produce a sharp image to the edge of the lens for less distortion. Magnifiers are widely used in jewelry inspection and fabrication, watch-making, needlework, artwork, fly-tying, electrical inspection, reading, print inspection, and stamp-collecting.

Aven manufactures optical inspection tools, precision tools, and bench accessories for industrial, scientific, and research applications. The company was founded in 1983 and is headquartered in Ann Arbor, MI.

What’s in the Box?

• LED Mighty Vue magnifying lamp; 26505-LED
• Instruction manual

Best Buy Donegan LX-5 OptiVISOR with Optical Grade Acrylic Lensplate, 2.5x Magnification, 8" Focal Length Reviews

The Donegan OptiVISOR LX is a hands-free, headband binocular magnifier that has an optical-grade, acrylic lens plate that is ground and polished into prismatic lenses for quality, clarity, and durability, and is available in multiple dioptric strengths (indicated in the model number) which provide specific magnification power (X) at specified focal lengths, or distance from object. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications such as jewelry-making, watch-making, needlework, artwork, electronic inspection, book-reading, print inspection, and stamp-collecting.

The OptiVISOR LX magnifier features a durable, replaceable binocular lensplate, made of optical grade acrylic (model AL-13). An adjustable headband with padded leather comfort band conforms to a variety of head sizes and provides comfort for hours of continuous use. It can be worn over prescription or safety eyeglasses. A durable, plastic visor tips up above the forehead when not in use. Spring-loaded pivot screws hold the headband in a raised or a forward-facing position. The magnifier weighs 0.67 lbs., and comes housed in a protective shell and carrying case. It has a one-year limited warranty. Diopter (D) is a technical term for the measurement of the light curvature and thickness of a lens. A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8”). The higher the diopter, the more magnification a lens can provide. As magnification increases, distance to the object (focal length), and field of view (diameter, or narrowness of view) decrease. Magnifiers and prescription eyeglasses have a diopter value, such as 1.5 or 2. The dioptric strength of an accessory lens, such as prescription eyeglasses or an eye loupe, must be added to the dioptric strength of the magnifier to calculate total magnification. Magnifiers are devices used to enlarge the visual appearance of an object or image. Magnifiers come in a variety of styles such as hand-held, headband, standing, clip-on, eye loupe, and those that hang in a necklace form, or fit in a trouser pocket. Magnifiers are commonly made of plastic or glass. They can have one or more lenses with varying magnification abilities, and can have a binocular configuration with a single lens, or two separate lenses. They are sometimes used with LED or fluorescent light sources to help control viewing capabilities. Magnifier ability is often expressed as magnification at a specific length. For example, 1.75X at 14” means that when a magnifier is held at 14” from a viewer’s eyes, the object will be magnified 1.75 times (X) its actual size. As magnification increases, viewing areas and focal length decrease. Magnifiers sometimes have a diopter number, expressed as + or - D, which is a measurement of strength (or power) of the lens. Some magnifiers are marked with a dioptric number on the lens. A high diopter number has a higher magnification than a low diopter number. Aspheric magnifiers, unlike spheric magnifiers, produce a sharp image to the edge of the lens for less distortion. Magnifiers are widely used in jewelry

Determining Magnification Diopter Magnification Focal length (Distance from object) Sample view 20/20 vision 20" (50.8cm) 2-diopter lens 1.50X 20" (50.8cm) 3-diopter lens 1.75X 14" (35.56cm) 4-diopter lens 2.00X 10" (25.4cm) 5-diopter lens 2.50X 8" (20.32cm) 7-diopter lens 2.75X 6" (15.24cm) 10-diopter lens 3.50X 4" (10.16cm)

inspection and fabrication, watch- making, needlework, artwork, reading, print inspection, and stamp-collecting.

Donegan Optical manufactures and distributes precision visual devices for hobbyists and professionals in industry, home, office and crafts applications. The company was founded in 1952 and is headquartered in Lenexa, Kansas.

What’s in the Box?

• OptiVISOR LX magnifier
• Fitted, plastic carrying case
• Instruction manual

Best Buy SE MH1041LC led lighted head magnifier Reviews

SE MH1041LC led lighted head magnifier

Up Close, And Up Closer Forget watchmaking, you could write the "A Tale of Two Cities" on a piece of tortellini with this triple magnifier visor. Magnifies from 1.8X to 4.8X. Has a permanent 2.2X lens, a flip-down lens, and a flip-down loupe. Separate white LEDs at each temple, powered by (2) "AAA"s each which aren't included. The whole thing is in a black plastic visor, 7-3/4" wide x 5-1/4" deep with a flexible plastic strap held by a hook-and-loop closure. Opens to 9" max dia and has coated acrylic lenses. Now then: It was the best of times, it was the worst of times.

Best Buy Easy Eyes Headband Magnifier 1.8x to 4.8x (Economy) Reviews

The "Easy Eyes" Magnifier, says it all, it has four magnifications in one, ranging from 1.8x to 4.8x. This magnifier makes it easy to see fine objects and do precision inspection. It is suitable for all kinds of uses from jewelry work, crafts, reading, model making, bead stringing and even coin and stamp inspections. It features a Velcro strap for quick and easy adjustments which makes this a one size fits all tool. The wide body even allows the user to wear glasses while using the Easy Eyes so this really is the most versatile economy magnifier you can find. The headband magnifier Keeps your hands free while enhancing your vision. The 3-level acrylic lens system which allows dual lens functionality provides a variety of magnification levels up to 4.8x using a combination of a 1.8x fixed lens, a flip down lens and a loupe style swivel lens. Magnifier assembly can be flipped up out of your way when not in use. For those who don't need the professional quality and price of an OptiVisor or MagnaVisor this is a good alternative option.

Best Price Donegan CO-4 Clip-On Binocular Headband Magnifier, 2x Magnification, 5 Diopers, 8" Focal Length Reviews

The Donegan clip-on, binocular, hands-free magnifier with frame has a dual acrylic lens system with optical-grade lenses ground and polished into prismatic lenses, and is available in multiple colors, and multiple dioptric strengths (indicated by the number in the model) which provide specific magnification power (X) at a specified distance from object. This magnifier enhances the size and resolution of an object or image, and is commonly used for a variety of applications such as jewelry-making, watch-making, needlework, artwork, electronic inspection, fly-tying, book-reading, print inspection, and stamp-collecting.

The clip-on, binocular, lightweight (0.417 lbs) magnifier features binocular lenses that come with a frame and clip that attaches to the frame or eyeglasses. The magnifier can be worn over prescription or safety eyeglasses, and has the ability to flip up when not in use. Spring-loaded pivot screws hold the headband in a raised or a forward-facing position. The magnifier is available in assorted colors such as black, and blue. It comes housed in a protective shell and carrying case. It has a one-year limited warranty. Diopter (D) is a technical term for the measurement of the light curvature and thickness of a lens. A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8”). The higher the diopter, the more magnification a lens can provide. As magnification increases, distance to the object (focal length), and field of view (diameter, or narrowness of view) decrease. Magnifiers and prescription eyeglasses have a diopter value, such as 1.5 or 2. The dioptric strength of an accessory lens, such as prescription eyeglasses or an eye loupe, must be added to the dioptric strength of the magnifier to calculate total magnification. Magnifiers are devices used to enlarge the visual appearance of an object or image. Magnifiers come in a variety of styles such as hand-held, headband, standing, clip-on, eye loupe, and those that hang in a necklace form, or fit in a trouser pocket. Magnifiers are commonly made of plastic or glass. They can have one or more lenses with varying magnification abilities, and can have a binocular configuration with a single lens, or two separate lenses. They are sometimes used with LED or fluorescent light sources to help control viewing capabilities. Magnifier ability is often expressed as magnification at a specific length. For example, 1.75X at 14” means that when a magnifier is held at 14” from a viewer’s eyes, the object will be magnified 1.75 times (X) its actual size. As magnification increases, viewing areas and focal length decrease. Magnifiers sometimes have a diopter number, expressed as + or - D, which is a measurement of strength (or power) of the lens. Some magnifiers are marked with a dioptric number on the lens. A high diopter number has a higher magnification than a low diopter number. Aspheric magnifiers, unlike spheric magnifiers, produce a sharp image to the edge of the lens for less distortion. Magnifiers are widely used in jewelry inspection and fabrication, watch-making,

Determining Magnification Diopter Magnification Focal length (Distance from object) Sample view 20/20 vision 20" (50.8cm) 2-diopter lens 1.50X 20" (50.8cm) 3-diopter lens 1.75X 14" (35.56cm) 4-diopter lens 2.00X 10" (25.4cm) 5-diopter lens 2.50X 8" (20.32cm) 7-diopter lens 2.75X 6" (15.24cm) 10-diopter lens 3.50X 4" (10.16cm)

needlework, artwork, fly-tying, electrical inspection, reading, print inspection, and stamp-collecting.

Donegan Optical manufactures and distributes precision visual devices for hobbyists and professionals in industry, home, office and crafts applications. The company was founded in 1952 and is headquartered in Lenexa, Kansas.

What’s in the Box?

• Clip-on binocular magnifier
• Frame
• Fitted, plastic carrying case
• Instruction manual

Professional Jeweler's Lighted Magnifier Visor - 5 Lenses 1.0X to 3.5X - Weighs Just 2 oz. Reviews

Highly-versatile magnification tool used by professional jewelers for extra-fine detail work like diamond setting or watch repair. Great vision aid at home or work; popular for electronics repair, embroidery, coin stamp collecting or as a general reading aid. Five interchangeable lenses in magnification powers/focal range (viewed object distance from lens) 1.0X 24", 1.5X 15", 2.0X 7-11", 2.5X 6-10" and 3.5X 4-7". Made from high-density acrylic, the lenses are polished much like glass lenses and offer excellent clarity - but at a fraction the weight. Surface-hardened to help prevent scratches set includes protective storage case. Lenses snap into holder that flips lenses up & out of way when not in use. Comfortable eyeglass frames for quick on/off or for more secure fit, switch to elastic headband. Total visor weight with lens is just 2 oz.

Best Price Light Head Magnifying Glass-1 Slot 4 Replaceable Lenses, Dual Lens Combination Delux Reviews

Highly-versatile magnification tool to get enchanced view of your workpiece, collectibles, embroider or today's newspapers. Four interchangeable lenses in magnification powers/focal range (viewed object distance from lens) 1.2 x 20-24 in., 1.8 x 9-12 in., 2.5 x 6-10 in., and 3.5 x 3-5 in.. Made from high-density acrylic, the lenses are polished much like glass lenses and offer excellent clarity- but at a fraction the weight. Surface-hardened to help prevent scratches; set includes protective storage case. Lenses snap into tow flip-up holders allowing you to customize magnification by using any two lenses together; easy to change. Ratchet headband is easy to size while wearing and fits all head sizes-from small children to giant 'melons;. Metal tension knobs for adjusting up/down angle-tighten to hold favorite position or loosen slightly to allow visor to push up out of the way. Made from durable ABS, total wearing weight is less than 6.5 oz with 2 lenses attached & included installed. An outstanding value that will give you the 'big picture' for years to come.