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Imperial Office Master

Imperial Office Master
Inside Imperial Office Master

Imperial Office Master

Hand operated 10-key add-lister.

Prints totals up to 999,999,999.99

Addition and subtraction (multiplication and even division is possible using special techniques).

210 x 340 x 150 mm (8.25" x 13.5" x 5.9").

Introduced at the end of 1970.

Made in Germany by W. Feiler, G.m.b.h.


This manual mechanical adding machine was introduced to the market as late as the end of 1970. It was still much cheaper than the electronic calculators of the time and if you only wanted add-listing it would perform the job quite adequately.

Vintage Calculators

© Text & photographs copyright Nigel Tout   2000-2019  except where noted otherwise.