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US Patent: 51,564
Improvement in Plumb-Level Inclinometer
Patentee: Gustavus Cuppers (exact or similar names) - New York, NY USPTO Classifications: 33/391 Tool Categories: layout tools : levels : inclinometers layout tools : levels : pendulum levels Assignees: None Manufacturer: Not known to have been produced Witnesses: Jos. L. Coombs J. Lane Jno. S. Harley T. C. Campbell	Patent Dates: Granted: Dec. 19, 1865 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This is a "mantel" style inclinometer, with a graduated dial and an unusual method of suspending the indicator.

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