Protractor, semi-circular

Graduated semi-circular protractor with internal frame, to which is attached a graduated arm. Screw for fine adjustment on the internal frame, small magnifying lens at centre of frame.

Object Details

ID: ZBA0819
Type: Protractor, semi-circular
Display location: Not on display
Creator: Simms, James & George; Simms
Date made: 1825-1850
People: Museum of Science and Industry, Manchester
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 42 x 425 x 107 mm
Parts: Protractor, semi-circular
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