Mine surveying sighting disc, German, 1920-1930

Made:
1920-1930 in Jena
maker:
Carl Zeiss, Jena
and
Carl Zeiss (London) Limited

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Sighting disc or movable bench mark for mine surveying, in metal carrying case, supplied by Carl Zeiss (London) Ltd., c. 1925.

Details

Category:
Surveying
Object Number:
1929-258
Materials:
brass (copper, zinc alloy), copper (metal), glass, leather, metal (unknown), plastic (unidentified), steel (metal), textile and wood (unidentified)
type:
bench mark
taxonomy:
  • furnishing and equipment
  • tools & equipment
  • surveying instrument
credit:
Carl Zeiss (London) Limited