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US Patent: 51,675
Improvement in Combined Level, Square, Compass, and Plumb-Staff
Patentee: James R. Abbott (exact or similar names) - Midway, IN USPTO Classifications: 33/273, 33/275R Tool Categories: layout tools : levels layout tools : squares trade specific : surveyor Assignees: None Manufacturer: Not known to have been produced Witnesses: Geo. B. Nicholson James H. Layman Alexr. A.C. Klauke	Patent Dates: Granted: Dec. 26, 1865 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This kind of a strange tool, combining a variety of surveyors tools with a carpenter's level and square.

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