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US Patent: 263,602
Calipers and Dividers
Patentee: Bernard K. Shumway (exact or similar names) - Chicopee Falls, MA USPTO Classifications: 33/558.07 Tool Categories: layout tools : calipers Assignees: None Manufacturer: Not known to have been produced Witnesses: Sherman R. Nye Henry F. Heath Joseph Cutler A. L. White	Patent Dates: Applied: Feb. 17, 1882 Granted: Aug. 29, 1882 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: These calipers feature a centrally located thumbwheel. allowing the fine adjustment to be made one-handed

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