Roget's log-log slide rule
- Made:
- London
- maker:
- William Cary
Roget's log-log slide rule, wood; made by William Cary,London, size 20 3/4" x 1" x 5/16"; one slide 21 1/2" long
Roget's log-log slide rule, wood; made by William Cary,London, size 20 3/4" x 1" x 5/16"; one slide 21 1/2" long