Placing a vacuum tube in position for an x-ray photograph / Interior of an electric wave filter
Image Not Available

Placing a vacuum tube in position for an x-ray photograph / Interior of an electric wave filter

Image Not Available
Photograph

Bell Telephone Laboratories

Maker
American

Placing a vacuum tube in position for an x-ray photograph / Interior of an electric wave filter

1935–1937
Gelatin silver prints
Image (top): 9 5/8 × 7 5/8 in. (24.5 × 19.4 cm)
Image (bottom): 6 3/16 × 8 3/8 in. (15.7 × 21.3 cm)
Mount: 21 15/16 × 14 15/16 in. (55.8 × 37.9 cm)
Gift of the Photographic Society of America, Rochester Technical Section
Inscriptions Typed on applied label on mount recto, TC: Placing a vacuum tube in position for \ an X-ray photograph.
Typed on applied label on mount recto, BC: Interior of an electric wave filter \ enclosed in a sheet steel can and filled \ with a wax sealing compound. Broken \ wires and misplaced elements are readily \ detected by this method \ BELL TELEPHONE LABORATORIES
Printed in black on applied label on mount recto, BLC: 677
Printed in black on orange applied label on mount verso, TLC: first \ international \ exhibit \ SCIENTIFIC \ APPLIED \ PHOTOGRAPHY \ ROCHESTER \ TECHNICAL \ SECTION \ PHOTOGRAPHIC \ SOCIETY \ OF AMERICA \ RUNDEL LIBRARY \ MARCH 15 APRIL 3 \ 1937 \ ROCHESTER, N.Y.

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