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US Patent: 824,109
Spirit-Level
Patentee: Allen T. Gibson (exact or similar names) - Hodges, TX USPTO Classifications: 33/389 Tool Categories: layout tools : levels : inclinometers Assignees: None Manufacturer: Not known to have been produced Witnesses: M. J. Watts J. E. Franklin E. G. Deliant R. M. Elliot	Patent Dates: Applied: Aug. 12, 1905 Granted: Jun. 26, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This inclinometer features an unusual rotating level vial for masuring angles, as well as a standard plumb and level and a compass.

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