A Tour of Company Sites

Rockwell-Anita Calculators
Rockwell-Anita 102

Anita 102

Rockwell Anita 102.

9v (PP3 battery).

Display is 8 digits, red LED.

4 functions.

76 mm x 148 mm x 23 mm (3.0" x 5.8" x 0.9").

The label on the back says "Rockwell International.
Sumlock Anita Ltd, Uxbridge, England.
Assembled in Mexico Primarily of United States components."

Battery holder

This model has an unusual battery holder which completely detaches from the bottom of the calculator before the cover can be removed and the battery replaced.

Anita 102 in its box.

By the time that this model was made Rockwell had taken over Sumlock Anita and many of the Rockwell calculators were manufactured in Mexico.


The label on the rear of the calculator displays "Assembled in Mexico, Primarily of United States Components". This calculator is identical to the Unicom 102 calculator, shown below, and someone has left a reference to the Unicom 102 on the label above.

Unicom was the trade name of the calculators manufactured by the semiconductor company American Micro-systems Inc. Like Sumlock Anita, it was bought by Rockwell in 1972 which continued to manufacture the Unicom models for a time.

Unicom 102

The similar Unicom 102 calculator, for comparison.

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
The Technology Explained
Operating a Comptometer
Old Sterling Currency, £sd
Update Information
Getting in touch

Rockwell-Anita Calculators

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Rockwell 21R
Rockwell 30R

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