
Diamond & Hinman type variable-frequency radiosonde, 1944
Diamond & Hinman type radiosonde and hygrometer element, modified by Julien P. Friez and Sons Inc., unsigned, American, 1944
- Object Number:
- 1958-95 Pt1
- type:
- radiosonde , hygrometer and instrument component
- Image ©
- The Board of Trustees of the Science Museum