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Very early Caliper J R BROWN & SHARPE MAKER PROV RI
I have a very old caliper marked J R BROWN A SHARPE MAKER PROV. RI It's three inches long and consists of three parts as pictured. I suspect it was made not long after the invention of the linear dividing engine. Every inch is marked in a different scale. The various divisions are (3 to a...- Sstrave
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- Replies: 9
- Forum: Antique Machinery and History