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US Patent: 1,241,282
Combination-Square
Patentees: Alexander M. Remer (exact or similar names) - Philadelphia, PA Frederick Hughes (exact or similar names) - Camden, NJ USPTO Classifications: 33/426 Tool Categories: layout tools : squares layout tools : bevels layout tools : protractors Assignees: None Manufacturer: Not known to have been produced Witnesses: Rhoda E. Gillies Chas. E. Potts H. P. Harwood C. R. Ziegler	Patent Dates: Applied: Apr. 19, 1916 Granted: Sep. 25, 1917 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This square features a rotating arm attached with a complicated sliding cam attached to an indicator arrow to mark the angle.

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