Brass machine-screw, one of six, for securing the Parautoptic lock to the Exhibition Display Frame, by Day & Newell, Manhattan, New York, New York State, United States of America, 1851. Exhibited at the 1851 Great Exhibition, London, England.
Details
- Category:
- Locks & Fastenings
- Object Number:
- 1970-349/4
- Materials:
- brass (copper, zinc alloy)
- type:
- screw
- credit:
- Chubb and Son's Lock and Safe Co.
