Cold-cathode X-ray tube with two cathodes and two anodes
- Made:
- 1900-1919
Cold-cathode X-ray tube with two cathodes and two anodes, no.3986, probably for stereoscopic use, 1900-1919.
Cold-cathode X-ray tube with two cathodes and two anodes, no.3986, probably for stereoscopic use, 1900-1919.