Slide Rules and Odd Sliding Calculating Devices
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This is a  MOTOROLA Teleprinter Rate Calculator. 
Date  pre- zip code

MOTOROLA'S High-Speed Electronic Teleprinter System TP3000

Motorola Military Electronics Division, Chicago Center 1450 Cicero Avenue Chicago 51 Illinois. 
(Ed Groth Collection at SMECC)



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Material SMECC 2007 or by other owners 

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