Electrical drive motor for Shaw type seismograph, British, 1930-1935

Base with modern electrical driving motor for Shaw horizontal pendulum seismograph, 1930-1935

Details

Category:
Geophysics
Object Number:
1935-348 Pt3
Materials:
brass (copper, zinc alloy), steel (metal) and copper (metal)
Measurements:
overall: 840 mm x 910 mm x 730 mm,
type:
instrument component and seismograph
credit:
Shaw, John Johnson