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.
Imperial models
Vintage Calculators
© Text & photographs copyright Nigel Tout 2000-2019 except where noted otherwise.