Self-locking sow rings
Two of six self-locking sow rings, copper, by Arnold and Sons, London, 1930-1960
- Measurements:
-
ring: diameter 40 mm
ring: height 10 mm
box: length 51 mm
box: width 51 mm
box: height 52 mm
- Materials:
- cardboard , copper (metal) and brass (copper, zinc alloy)
- Object Number:
- 1984-1714 Pt1
- type:
- sow rings
- Image ©
- The Board of Trustees of the Science Museum
