Optical square for use with telemeter, British, 1904-1911
- maker:
- J H Steward
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Science Museum Group
© The Board of Trustees of the Science Museum
Optical square for use with Steward-type telemeter, No. 67, in case, by J. H. Steward, 406 Strand, London, England, 1904-1911.
Details
- Category:
- Surveying
- Object Number:
- 1986-575
- Materials:
- brass (copper, zinc alloy), glass, leather, velvet and steel (metal)
- Measurements:
-
overall: .345kg
- type:
- optical square
- credit:
- Steward, D.M.
