7X, 10X and 20X Hastings Triplet Magnifiers

Bausch & Lomb Inc

7x 10x and 20x hastings triplet magnifiers  

**Wide, flat distortion-free field -- **For printers and photo engravers -- **Chromatic and spherical aberration-corrected -- Unique three-element design provides the ultimate in distortion free, color-correct viewing, facilitating reduction or elimination of "pin cushion" distortion and chromatic and spherical aberations. -- Two concave meniscus elements are cemented to a double convex lens, then mounted with threaded retaining rings in a machined black anodized metal cell which swing into a protective brass case. The case doubles as a handle for 7x 10x and 20x hastings triplet magnifiers viewing. -- We caution buyers that laws of physics dictate that both the diameter and working distance of a magnifier must decline as power increases. Accordingly, the 20X system, while an excellent high-power magnifier, is relatively small and has a short working distance. The next step from the 20X Hastings is a full microscope. -- SPECIFICATIONS: -- Lens Diameter: 23mm / 7/8" -- Field of View: 33mm / 1 5/16" -- Focal Length: 40mm / 1 9/16" -- Working Distance: 37mm / 1 1/2" -- Case Dimensions: 1" H x 2" L

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7x And 20x Hastings Triplet Magnifiers

Hows and Whys of Science Kit

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