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Date
Parallax-bar stereometer PB2

Parallax-bar stereometer PB2

Centre separating prism for Barr and Stroud rangefinder

Centre separating prism for Barr and Stroud rangefinder

1920
FT3 rangefinder, by Barr and Stroud

FT3 rangefinder, by Barr and Stroud

1908
Inner tube of Barr and Stroud 2-metre base rangefinder

Inner tube of Barr and Stroud 2-metre base rangefinder

1920
Part of optical range-finder, British, 1900

Part of optical range-finder, British, 1900

1900
Part of optical range-finder, British, 1902-1904

Part of optical range-finder, British, 1902-1904

1900
Type F.P.4 rangefinder with tripod adaptor

Type F.P.4 rangefinder with tripod adaptor

1960
Large photogrammetric plotting machine by Barr and Stroud, c. 1928

Large photogrammetric plotting machine by Barr and Stroud

1928
Barr and Stroud range-finder, 4ft 6ins base, used aboard ship on Antarctic Expeditions, 1902-1904 and 1910-1913

Optical range-finder, British, 1902-1904

1900
Part of Barr and Stroud rangefinder, 4ft 6ins base, used aboard ship on Antarctic Expeditions, 1902-1904 and 1910-1913

Part of optical range-finder, British, 1902-1904

1900
Tilt finder by Barr and Stroud, for use with plotter 1932-464 and Thompson plotter 1930-248, c. 1927

Tilt finder by Barr and Stroud

1927