Balloon theodolite by E.R. Watts & Son
- maker:
- E. R. Watts & Son
Balloon theodolite by E.R. Watts & Son, London, No. 20563, dated 18 June 1940, cased.
Details
- Category:
- Meteorology
- Object Number:
- 1997-1416
- Measurements:
-
theodolite: 25.4 cm
- type:
- balloon theodolite
- credit:
- Meteorological Office