Circular protractor, British, 1800-1819
1800-1819
Protractor and Coordinatograph
Brass plane table protractor, British, 1821-1826
1821-1826
Semi-circular protractor
Brass protractor, German, 1905-1914
1905-1914
Coordinating protractor, German, 1905-1914
1905-1914
Brass protractor, British, 1941-1950
1941-1950
Circular Protractor
1875
180-Degree Protractor
1880-1910
Dancer Protractor
1860
Bombing Protractor in Case.
Edye type protractor, British, 1843-1873
1843-1873
Sandhurst protractor
Douglas type reflecting protractor, German, 1811-1818
1811-1818
Geostrophic wind protractor, designed by Lt Cdr Ge
1935-1945
Triangular protractor, European, 1718
1718
Douglas type reflecting protractor, British, 1811-1825
1811-1825
180-Degree Protractor
1870-1880
Marking Protractor
1843
Two Off Metal Protractors Used at the RAE
Vernier Control protractors
1955-1965
Circular plotting protractor patented by E.R. Zenthon in 1960
1960-1970
Mine surveyor's kit, 1701-1800
1701-1800
Brass protractor
Circular reflecting protractor, British, 1801-1825
1801-1825