Two completely different versions of the Decimo International are known, illustrated below.
Decimo International - type 1
6v (4x AA batteries).
Display is 6 digits, green Vacuum Fluorescent Display in a single tube. The lower 6 decimal places of a number can be displayed by pressing the "< >" key.
Integrated circuit is a Mitsubishi MA8168B.
82 x 137 x 25 mm / 3.2 x 5.4 x 1.0".
Country of maunfacture not known.
Decimo International - type 2 - model 173A, also known as the International Slimline
6v (4x N batteries).
Display is 8 digits, red LED.
4 functions, %, memory.
69 x 150 x 17 mm / 2.7 x 5.9 x 0.7".
Price in September 1974 GBP£53-90.
Country of manufacture not known.
Vintage British Calculators
© Text & photographs copyright Nigel Tout 2000-2023 except where noted otherwise.