Electric eyes
Subtitle: a concise and elementary description of the photo-electric cell, for the non-technical reader: its uses in industry, and its uses and short-comings.
Edition: 2d ed. with supplement.
Series: A Tintometer publication
Publisher: The Tintometer
Published: 1954
Place of publication: Salisbury, Eng
Language: eng
Number of pages: 37
Subjects: Photocopy cells.