Imperial 81SR
Imperial 81SR
Display is 8 digits, green vacuum-fluorescent display (VFD) in a single tube.
Scientific.
4.5 v (3 x AAA).
65 x 95 x 23 mm (2.5 x 3.75 x 0.9").
Made in Japan.
Imperial Typewriter and Business Machines Ltd.
A very tiny scientific calculator only just bigger than a credit card, though much thicker, however of limited capability.
Imperial models
Vintage British Calculators
Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2024.