Continuing Companies
Sumlock had a number of local offices around Britain which were involved in marketing and servicing the calculators. When Rockwell exited the calculator market in 1976 these ex-Sumlock-Anita sales offices and service offices were then offered as independent franchises to those who worked in them, as explained on the 'Demise of ANITA and Bell Punch' page on this website.
Some of the then independent offices went on to sell their own products. Here are three of those companies:
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Sumlock Bondain Ltd., London.
Sumlock Tabdown Ltd., Bristol.
Sumlock Electronic Services (Manchester) Ltd.
The Bell Punch Company & the Development of the Anita Calculator
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Text & photographs copyright © 2002 - 2023 Nigel Tout, except where noted otherwise.