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Imperial 81M

Imperial 81M

Imperial 81M

Display is 8 digits, green fluorescent in a single tube.

4-function, %, memory

4.5 v (3 x AAA).

50 x 92 x 20 mm (2" x 3.6" x 0.8").

Made in Japan.
Imperial Typewriter and Business Machines Ltd.

A tiny calculator only just bigger than a credit card, though much thicker, see the photograph of the Imperial Companion held in the hand.

Vintage Calculators

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