P O C K E T   M E T R I V E R T O R                           (1973)
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                                    made by Y.B.G. Dayton Ohio / USA



FRONT SIDE  /  BACK SIDE


UNIVERSAL CIRCLE METRIC CONVERTER                             (1970)
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                                                   made in Hong Kong


Have a look at SLIDE CALCULATORS ...

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© C.HAMANN       www.tfh-berlin.de/~hamann      impressum     11/10/07