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2 Results
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Aircraft inclinometer
Technology
Aircraft instrument used to give the fore and aft levels of the machine. The instrument is circular in shape, the outer support ring being 105 mm in diameter. The instrument case rises approx. 15 mm ...RELAWM08131.002
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Tunneller's inclinometer, or Abney Level : Captain A S Harvey, Royal Engineers
Technology
Simple surveyor's theodolite or inclinometer, consisting of a long rectangular sighting tube, finished in black and bearing the maker's name impressed into one side, with a small adjustable brass tele...REL/00521.001