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6" Slide Rule | Tools and Hardware945 of 2144 |  |  |
Posted 1 year ago
mustangtony
(2470 items)
A 6" Slide Rule made by Albert Nestler Co., Germany circa 1920's/30's.
This is Model No. 11ZR and came in a dark brown leather sheath. Used for mathematical calculations in the drawing and drafting fields.
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Rules and RulersRulers, also known as rules, began as an attempt to standardize measurement…