experimental discharge tube
Date: 1920-1929
Inventory Number: VT0211
Classification: Vacuum Tube
Dimensions:17.9 × 3.5 × 3.5 cm (7 1/16 × 1 3/8 × 1 3/8 in.)
Description:
HOR CYL ANODE - ENDFIRE? G-M 1502
4 pin bakelite base with index pin on side tube held in place with white plaster(?). Base is cracked in location of index pin