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Place
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Road tracer type level with target, British, 1923-1927

Road tracer type level with target, British, 1923-1927

1923-1927
Acetylene signal lamp with heliograph attachment used for geodetic surveying in Uganda

Acetylene signal lamp with heliograph attachment used for geodetic surveying in Uganda

1907
Mark II Cotton-Type Range Finder

Mark II Cotton-Type Range Finder

1960-1965
Levelling staff, British, 1920-1922

Levelling staff, British, 1920-1922

1920-1922
Met Office Mk B type balloon theodolite, 1919

Met Office Mk B type balloon theodolite, 1919

1919
14" Canadian Pattern Y-level

14" Canadian Pattern Y-level

1920
Combined optical square & hand level, British, 1920-1926

Combined optical square & hand level, British, 1920-1926

1920-1926
Part of levelling staff, British, 1915-1922

Part of levelling staff, British, 1915-1922

1915-1922
Levelling staff, British, 1920-1922

Levelling staff, British, 1920-1922

1920-1922
Wade type spirit level, British, 1924

Wade type spirit level, British, 1924

1924
Levelling staff, British, 1920-1922

Levelling staff, British, 1920-1922

1920-1922
Glass scale division demonstration, British, 1919-1922

Glass scale division demonstration, British, 1919-1922

1918-1922
Balloon theodolite MkII by E.R. Watts and Son

Balloon theodolite MkII by E.R. Watts and Son

1943
Balloon theodolite by E.R. Watts & Son

Balloon theodolite by E.R. Watts & Son

1917
Plotting rule by E.R. Watts & Son London

Plotting rule by E.R. Watts & Son London

1920-1940
Rangefinder, Cotton type Mk.11

Rangefinder, Cotton type Mk.11

Balloon theodolite by E.R. Watts & Son

Balloon theodolite by E.R. Watts & Son

1940
Brunton pocket transit compass by E.R. Watts, London, England, 1918-1922. Comprising case, compass and stand. (see stroke (and part) records)

Brunton pocket transit compass with case, British, 1918-1922

1918-1922
Three specimens of graduated scales for levelling staves by E.R. Watts and Son, c 1920

Three levelling staves, British, 1920-1922

1920-1922
Micrometer transit theodolite (sectioned), 3.5-inch, in clear plastic display case, and storage box by E. R. Watts & Son, London, England, 1926.

Sectioned micrometer transit theodolite, 1926

1926
Early Lens Grinding Machine by E.R. Watts & Son, London, England, c.1900.

Early Lens Grinding Machine by E.R. Watts & Son

1895-1905