Wetness recorder, main unit, Mark 3A
Wetness recorder, main unit, Mark 3A, Marked Ref.No.MET 2001, serial no.MO66/60. Dated 1960. Case protects drum recorder, pen moved by counterweighted probe (see pt2) set vertically through lid, with polystyrene head
- Object Number:
- 1995-909/1
- type:
- wetness recorder
- Image ©
- The Board of Trustees of the Science Museum