3-wheel keyless combination lock
3-wheel keyless combination lock, model M6730 MP, by Sargent and Greenleaf, New York, U.S.A., c.1949.
- Measurements:
-
overall: 100 mm x 110 mm x 120 mm,
- Materials:
- brass (copper, zinc alloy) and steel (metal)
- Object Number:
- 1960-228/1
- type:
- combination lock
- Image ©
- The Board of Trustees of the Science Museum