Ten inch slide rule
Ten inch slide rule, faced with celluloid, in case, steel-spring back, and metal cursor, with hair line on glass, cursor stamped D.P. D.R.G.M., ruler stamped D.R.P. no. 126499
Details
- Category:
- Mathematics
- Object Number:
- 1911-253
- type:
- slide rule
- credit:
- Davies, J. and Son Ltd. (Derby)
