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US Patent: 9,722
Pendulum Level
Patentee: Thomas A. Chandler (exact or similar names) - Rockford, IL USPTO Classifications: 126/1, 33/391 Tool Categories: layout tools : levels : inclinometers layout tools : levels : pendulum levels Assignees: None Manufacturer: Not known to have been produced Witnesses: P. H. Watson John L. Smith	Patent Dates: Granted: May 17, 1853 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This is a fairly traditional inclinometer design, with a special method of holding the pendulum to reduce friction.

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