Log-log Duplex slide-rule, plastic, 12 7/8" x 1 3/4", Janus series No. T.50, with cursor with box.
Details
- Category:
- Mathematics
- Object Number:
- 1959-170
- type:
- slide rule (log-log)
- credit:
- Blundell Rules Ltd.
Log-log Duplex slide-rule, plastic, 12 7/8" x 1 3/4", Janus series No. T.50, with cursor with box.
