The Kodak Salesman . Engraving Cell Testing Surface Accuracy ing to variation in the curvature ofthe lens. By means of this test anaccuracy frequently greater thanone-fifty-thousandths of an inchcan be obtained. The finished lenses are now care-fully examined and if no defects arediscovered are removed from theblocking body, cleansed and placedin racks. A very thorough inspec-tion is next made, each lens beingexamined with a magnifying glass and a special hooded lamp forscratches, uneven polishing, chips,striae, et cetera. Up to this point the greatest at-tention is paid to the polishing andgr
The Kodak Salesman . Engraving Cell Testing Surface Accuracy ing to variation in the curvature ofthe lens. By means of this test anaccuracy frequently greater thanone-fifty-thousandths of an inchcan be obtained. The finished lenses are now care-fully examined and if no defects arediscovered are removed from theblocking body, cleansed and placedin racks. A very thorough inspec-tion is next made, each lens beingexamined with a magnifying glass and a special hooded lamp forscratches, uneven polishing, chips,striae, et cetera. Up to this point the greatest at-tention is paid to the polishing andgrinding operations, but not muchthought is given to whether the lenswill fit in its mount or not. Eachlens is now placed in a special lathewhere after the lens has been prop-erly centered by observing an imagereflected in it, its edge is carefully. Fine Grinding ^ KODAK SALESMAN
Size: 2026px × 1234px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidkodaksalesma, bookyear1917
