Watts Mk IV 'acoustic' current meter
- Made:
- 1958
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Buy this image as a print
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Science Museum Group
© The Board of Trustees of the Science Museum
Watts Mk IV 'acoustic' current meter, with headphones
Science Museum Group
© The Board of Trustees of the Science Museum
Watts Mk IV 'acoustic' current meter, with headphones, hanger barand sinker weight, marker labels on one vane for balance or visual contact, and counter box. Form in lid dated 1958
