Log-log Duplex slide-rule
Log-log Duplex slide-rule, plastic, 12 7/8" x 1 3/4", Janus series No. T.50, with cursor.
- Materials:
- plastic (unidentified) and metal (unknown)
- Object Number:
- 1959-170/1
- type:
- slide rule
- Image ©
- The Board of Trustees of the Science Museum
