Waterproof cover for "Rouleau" calculator
Waterproof cover for "Rouleau" calculator, no.16, with (a cylindrical slide rule)
"Rouleau" calculator, no.16, with waterproof cover (a cylindrical slide rule)
Details
- Category:
- Mathematics
- Object Number:
- 1920-772
- type:
- slide rule (cylindrical)
- credit:
- Gordon, M.L. and Co.
Parts
"Rouleau" calculator
"Rouleau" calculator, no.16, (a cylindrical slide rule).
- Object Number:
- 1920-772 Pt2
- type:
- slide rule (cylindrical)
