Navigator's dual face slide rule
Navigator's dual face slide rule (B.R.L. Janus Model Ref No.N52).
Navigator's dual face slide rule (B.R.L. Janus Model Ref No.N52)
Details
- Category:
- Mathematics
- Object Number:
- 1955-177
- type:
- slide rule (navigation)
- credit:
- Blundell Rules Limited (Luton)
Parts
Case for navigator's dual face slide rule
Case for navigator's dual face slide rule, black with two clasps, with 'B.R.L' marked on the top in gold.
