M.O. humidity slide rule Mk IV, MO 1917/59, Met Ref No 1917/59, Met Ref No.1468, in case. Date 1959
Details
- Category:
- Meteorology
- Object Number:
- 1995-1886
- Measurements:
-
case: 2.1 x 29.4 x 5.5 cm
- type:
- slide rule
- credit:
- Meteorological Office