Buy Donegan BR-302 Premier Series Optical Glass Hand Reader, 7 Diopers 2-1/2" Focal Length
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Donegan BR-302 Premier Series Optical Glass Hand Reader, 7 Diopers 2-1/2" Focal Length Features :
- Premier series hand reader provides magnification and viewing for a variety of applications such as dermatology, fly-tying, jewelry-making, watch-making, needlework, 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")
- Polished brass edge and trim with a wide rim around the lens to prevent scratching, and a walnut wood handle for aesthetic appeal
- Aspheric magnifier produces a sharp image to the edge of the lens for less distortion
Donegan BR-302 Premier Series Optical Glass Hand Reader, 7 Diopers 2-1/2" Focal Length
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The Donegan Premier series magnifier is a hand-held magnifier that has a brass surround, a round lens with a wide rim, and is available in a variety of lens sizes, and multiple magnification powers (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 fly-tying, jewelry-making, watch-making, needlework, electronic inspection, book-reading, print inspection, and stamp-collecting. 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) This handheld magnifier features a polished brass edge and trim wit
Donegan BR-302 Premier Reviews,
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