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US Patent: 219,307
Micrometer Gage
Patentee: John Richards (exact or similar names) - Philadelphia, PA USPTO Classifications: 269/240, 33/813 Tool Categories: metalworking tools : machinist tools : measuring tools : micrometers Assignees: None Manufacturer: American Standard Gauge & Tool Works - Philadelphia, PA Betts Machine Co. - Wilmington, DE Witnesses: E. A. Dick J. C. Tasker	Patent Dates: Applied: Mar. 09, 1879 Granted: Sep. 02, 1879 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens American Precision Museum "Vintage Machinery" entry for Betts Machine Co.
Description: The micrometer on image #2 was manufactured by the Betts Machine Co.

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