'Hecta' Echo Sounder
The 'Hecta' instrument case with dials used to measure depth in hermetically sealed case, powered by mercury cells, on teak bracket, by Brookes and Gatehouse Limited, England, 1965-1966
- Measurements:
-
overall: 135 mm x 215 mm x 90 mm, 2.2kg
- Materials:
- teak (wood) , stainless steel , aluminium alloy , nylon , glass and plastic (unidentified)
- Object Number:
- 1974-347/1
- Image ©
- The Board of Trustees of the Science Museum