File:Pressey Testing Machine 2.jpg

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Interior of Pressey Testing Machine showing punchcard answer key.

Patent dates 1928 and 1930.

Exterior view also available.

Photograph by User:Gomer Bolstrood, September 7, 2006.

Released to the public domain.

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current20:10, 9 September 2006Thumbnail for version as of 20:10, 9 September 20061,692 × 1,405 (1,010 KB)Gomer Bolstrood (talk | contribs)Interior of Pressey Testing Machine showing punchcard answer key. Manufactured circa 1930. Photograph by User:Gomer Bolstrood, September 7, 2006. Released to the public domain.

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