Douglas type reflecting protractor, British, 1811-1825
1811-1825
Shadow protractor in case
Triangular protractor, European, 1718
1718
Sandhurst protractor
Circular protractor, British, 1800-1819
1800-1819
Brass protractor, German, 1905-1914
1905-1914
Marking Protractor
1843
Edye type protractor, British, 1843-1873
1843-1873
180-Degree Protractor
1870-1880
Protractor and Coordinatograph
Coordinating protractor, German, 1905-1914
1905-1914
Brass protractor, British, 1941-1950
1941-1950
Brass plane table protractor, British, 1821-1826
1821-1826
Semi-circular protractor
Circular Protractor
1875
Dancer Protractor
1860
Bombing Protractor in Case.
Geostrophic wind protractor, designed by Lt Cdr Ge
1935-1945
Douglas type reflecting protractor, German, 1811-1818
1811-1818
180-Degree Protractor
1880-1910
Brass single-arm protractor divided in half degrees and reading by vernier to one minute of arc
Brass single-arm semi-circular protractor
Semicircular protractor
1865
Accessories for reflecting protractor British, 1801-1825
1801-1825
Circular protractor with two arms by George Adams
Brass circular reflecting protractor, British, 1801-1825
1801-1825
Douglas Combined Protractor and Parallel Rule
1939-1945
One broken brass protractor
1790-1819
Brass protractor
Mine surveyor's kit, 1701-1800
1701-1800
Circular reflecting protractor, British, 1801-1825
1801-1825
Vernier Control protractors
1955-1965
Two Off Metal Protractors Used at the RAE
Circular plotting protractor patented by E.R. Zenthon in 1960
1960-1970
Part mine surveyor's kit, 1701-1800
1701-1800
Circular plotting protractor patented by E.R. Zenthon in 1960
1960-1970