Mincer Instaneous Axis Register
 Catalogue Number: 3278 Mincer Instaneous Axis Register Category: Equipment Sub-Category: Lens measure, lens clock Corporation: L. L. Mincer Year Of Publication/Manufacture: 1908 Time Period: 1900 to 1939 Place Of Publication/Manufacture: Rochester, New York Publisher/Manufacturer: L. L. Mincer Description Of Item: Nickel plated, glass faced dial measure for lens cylinder axes. Face is marked Mincer's Axis Register, O.S. and foreign patents appld. for and axis marks from 0 to 180 in 5 degree steps repeated around the circumference of the face. The central pointer is able to move through the full 360 degrees. The top of the device has two clamps attached, one part oval to hold lenses, the other straight, to hold spectacle frames. A mechanism for locking the pointer is activated by a lever on the top right of the device. The rear of the case is stamped 1377. Historical Significance: Axis registers preceded the invention of the focimeter by Troppman in 1912 as a means of measuring the axis of cylindrical lenses. Earlier versions of Mincer's instrument (c 1900) do not have the spectacle frame clamp. This version was advertised as 'new' in a November 1908 edition of Ophthalmic Review. Condition: Good Location: Archive office. East wall shelves unit 3. Drawer 2 |