A Tour of Company Sites

Calculators Sold by Sumlock And Made By Other Companies
Plusograph

Plusograph

Plusograph

10-key mechanical add-lister, switchable between decimal and Sterling currency.

Introduced in 1969.

This machine appears to be identical with a Commodore model introduced at the same time, as shown below:

Commodore advertisement

If you have further information about the Plusograph (especially photographs), the development of Anita calculators, or know of somebody who worked there, please get in touch with me .

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

Plus & Sumlock Mechanical Calculators

Comptograph 101
Plusograph
Wanderer Conti
Logatronic Visible Computer
Nixdorf Visible Computer
RUF Accounting Machines
Compucorp 320G
Compucorp 324G

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Text & photographs copyright © 2002 - 2009 Nigel Tout, except where noted otherwise.