Introduction

Links to other sites for the Anita and Sumlock enthusiast

 

  • There are excellent photographs and descriptions of the Plus Adder mechanism at John Wolff's Web Museum site. These are accessed from the Comptometers and Key-Driven Calculators section on that site.

 

  • Simon Southwell has produced fascinating simulations of some of the Anita calculators at www.anita-simulators.org.uk. Pop one up and have a go, but don't forget to switch on first.

 

  • The Vintage Calculators Web Museum is the parent site of this one and has descriptions of many mechanical and early electronic calculators, calculator articles, and a calculator photo library.

The Bell Punch Company & the Development of the Anita Calculator
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Home
Introduction
Origins of Bell Punch Co.
Mechanical Calculator Days
National Calculating Service
Development of Anita 1
Development of Anita 2
Anita is Launched
At work with Anita
All Change at Bell Punch
Anita Developed Further
Anita at its Zenith
The Rockwell Connection
Demise of Anita & Bell Punch
Mechanical Calculators
Early Anita Desktop Calculators
Transistors & Integrated Circuits
Anita LSI Desk Calculators
Anita Hand-held Calculators
Rockwell-Anita Calculators
Calculators made by others
Advertisements & Brochures
Operating Manuals & Materials
Company Information
A Tour of Company Sites
Summary
The Technology Explained
Operating a Comptometer
Old Sterling Currency, £sd
Links
Update Information
Getting in touch

Click here to go to the Vintage Calculators Web Museum

Text & photographs copyright © 2002 - 2008 Nigel Tout, except where noted otherwise.