Electric hygrometer element in sealed glass tube
1944
Time of Flight Mass Spectrometer
1962
US Army Signal Corps 500kHz dinghy radio transmitter BC-778-E, 1944
1944
Aircraft bubble octant.
1942
Time of flight mass spectrometer; made by Bendix Aviation Corporation USA in 1962
1962
Rate of Climb Meter, 1942
1942
Specimen holder for time of flight mass spectrometer
1962