Paper maker's slide rule
1918-1925
Two paper maker's slide rules
Two paper maker's slide rules, patented by William Stanhope Buchanan in 1918: an initial rough model and a finished example made by C.T. Cooper and Sons for Becker and Co.
Details
- Category:
- Mathematics
- Object Number:
- 1988-921
- type:
- slide rule (paper) and slide rule (buchanan)
- credit:
- Delehar, P.
