Three GAD swamp geophones
- Made:
- 1950
Three GAD swamp geophones, c. 1950. One sealed in resin. 12x9 diam cm
Details
- Category:
- Geophysics
- Object Number:
- 1985-1422
- type:
- geophone
- credit:
- Seismograph Service (England) Ltd.
Three GAD swamp geophones, c. 1950. One sealed in resin. 12x9 diam cm
