Mechanical counter for fluid meters, 1881.
Three Excise Officer's slide rules, (boxwood), 2 about 1 feet long, and the third 9" long, each rule has four slides, one on each face of the rule
Details
- Category:
- Mathematics
- Object Number:
- 1905-115
- Materials:
- boxwood
- type:
- slide rule (excise)
- credit:
- Major-General H.P. Babbage