Portable water level recorder clock drive

Portable water level recorder clock drive, late 1940s

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Portable water level recorder clock drive, late 1940s
Science Museum Group
© The Board of Trustees of the Science Museum

Portable water level recorder clock drive, late 1940s

Details

Category:
Environmental Science & Technology
Object Number:
1998-187
type:
clock drive
credit:
Calver, D. B.