shop-built diode
Date1925
Inventory NumberVT0202
ClassificationVacuum Tube
Maker
Cruft Laboratory, Harvard University
founded 1914
Cultural Region
Place of Origin
Dimensions12 × 4.5 × 4.5 cm (4 3/4 × 1 3/4 × 1 3/4 in.)
Description"HELIUM DARK SPACE 1/16"" HOR ANODE"
FunctionExperimental
