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In November and December 1941, the United States National Defense Research Committee conducted extensive tests between the American Bausch and Lomb M1 stereoscopic rangefinder and the British Barr and Stroud FQ 25 and UB 7 coincidence rangefinders, and concluded "that the tests indicate no important difference in the precision obtainable from the two types of instrument – coincidence and ...
In November and December 1941, the United States National Defense Research Committee conducted extensive tests between the American Bausch and Lomb M1 stereoscopic rangefinder and the British Barr and Stroud FQ 25 and UB 7 coincidence rangefinders, and concluded "that the tests indicate no important difference in the precision obtainable from ...
In 2006, the original lens for the Bausch & Lomb telescope cracked beyond repair due to constant heating and cooling from use in the heliostat. The 18-inch and 16-inch teaching telescopes on the Observing Deck were replaced by two 20-inch Planewave CDK telescopes in 2017, named Artemis and Apollo. [citation needed]
Bausch & Lomb (since 2010 stylized as Bausch + Lomb [2]) is an American-Canadian eye health products company based in Vaughan, Ontario, Canada. It is one of the world's largest suppliers of contact lenses , [ 3 ] lens care products, pharmaceuticals, intraocular lenses , and other eye surgery products.
The firm renamed itself Bushnell Performance Optics. Three years later, Bushnell retired as vice-president of Bausch & Lomb. [2] In 1999, Bausch & Lomb sold Bushnell Performance Optics to the private equity firm Wind Point Partners through a recapitalization of Bushnell's then parent company, Worldwide Sports & Recreation. [3] [4] [5]
U.S. patent 182,919 – Improvement in Microscopes – 1876 – October 3 – A screw-thread coarse focus, parallel spring fine focus, swinging substage.; U.S. patent 198,607 – Improvement in stages for Microscopes – 1877 – December 25 – Sliding stage used on many Bausch & Lomb microscopes.
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