Title
Raytheon QK 329
Catalog Number
102672260
Type
Still image
Description
Color image of a Raytheon QK329 tube. Verso: " Raytheon QK 329 square-law tube - used in early analog computers introduced in 1958 E. Barbour 8/97"
Date
1997-05 ca.
Photographer
E. Barbour
Dimensions
overall: 5 in x 3 1/2 in
Category
Photograph
Credit
Courtesy of Gwen Bell