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

Made:: 1920-1926 in London

maker:: E. R. Watts & Son

Combined optical square and hand level, by E. R

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Combined optical square and hand level, by E. R
Science Museum Group
© The Board of Trustees of the Science Museum

Combined optical square and hand level, by E. R. Watts & Son, London, England, 1920-1926, patented 1920.

Details

Category:: Surveying

Object Number:: 1939-222

Materials:: brass (copper, zinc alloy), steel (metal), textile, leatherette, felt and cardboard

Measurements:: overall: 65 mm 52 mm, .16kg

type:: optical square and plummet level

credit:: E. R. Watts & Son

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