Optical Lens Pattern Cutter The NH-800AT automatic lens groover is an instrument that automatically grooves the edge of an eyeglass lens.The grooving position for the lens edge center grooving,the outer periphery profile grooving, and the inner periphery profile grooving can be easily set. Installation 1?
HEAVY DUTY HOLE MAKERS Designed for the fastest, easiest, most cost effective hole making using hand operated tools. EXTREMELY FAST CUTTING Cuts up to 10 times faster than a drill bit*. EXTREMELY LONG LIFE Lasts up to 10 times longer than heavy-duty drill bits, and 500 times longer than hole saws in steel.
Tricks & Secrets of Old-Time Machinists: Hints and Kinks Provided by the Readers of American Machinist Magazine in 1915, originally published in American Machinist Magazine, compiled, edited and published by Lindsay Publications, 2009. 5 1/2 x 8 1/2 paperback, 96 pages. ISBN 1-55918-383-7.
LeBlond Lathes Turn the World Over, by R.K. LeBlond Machine Tool Co., Cincinnati, OH. Original not dated, but layout design strongly suggests late 1940s or early 1950s.
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