John Tibbits Slocombe was born in New Brunswick but moved to Maine as an infant. At 16 he started at Bangor Foundry & Machine Co. as a machinists apprentice. From there he worked at several machine companies and while working with the highly crafted measuring devices of the day developed the idea for making a precise, affordable micrometer. He also seems to have been influential in setting the standard of measuring in thousandths of an inch.
He and a partner, C.E. Barlow set up J.T. Slocombe Co. and started selling measuring tools in 1893. The company was sold to J.H. Drury in 1914.
How to adjust a Slocombe micrometer
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| Patent 559,820 |
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