Sinclair Oxford 150


Brand: Sinclair
Model: Oxford 150
Type: Calculator
Picture: sinclair Oxford 150
Batteries: 9V x 1
Lifetime: Introduced: 1975
Terminated: unknown
Notes: A calculator designed by Clive Sinclair’s famous English brand for cars, computers and calculators.

The Sinclair Oxford 150 belongs to a series of calculators that include the Sinclair Oxford 100, 150, 200, 300 and the Sinclair Oxford Scientific.

This one is a basic calculator with square roots and percentages.

This calculator thinks √-9=3.

A nice write-up on Clive Sinclair and the Pocket calculator can be read on this page (link valid 2024-01-13).

Thank your, Arnoud Helmantel, for finding this one on a flea market!


A power adapter.