Bausch & Lomb® Lens Magnifier, 3.5X, 40mm Lens

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A double-lens magnifier originally designed for the exacting work of hand tooling photo-engraved printing plates. It has near universal application in precision work.  Has 2 plano-convex lenses to provide a corrected wide, flat field.

Magnification power of 3.5X with 3" focal distance. Lens diameter is a generous 40mm (1.6").

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