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US Patent: 64,203
Improvement in Calipers
Patentee: James Henry Culver (exact or similar names) - San Francisco, CA USPTO Classifications: 33/558.4 Tool Categories: layout tools : calipers Assignees: James Henry Culver - San Francisco, CA Cornelius Leonard - San Francisco, CA Manufacturer: Not known to have been produced Witnesses: C. W. M. Smith Geo. H. Strong	Patent Dates: Granted: Apr. 30, 1867 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This set of calipers features a doubly-hinged leg, allowing one leg to be swung out of the way when measuring beyond a protruberance.

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