Brunsviga 13RM

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The German company Grimme, Natalis and Co. of Braunschweig obtained the German patent rights to the Odhner pinwheel calculator in 1982, and produced similar machines under the Brunsviga name. The company improved and developed the Brunsviga which became one of the most successful mechanical calculators and was produced up to the early 1970s.

The company merged with Olympia in 1959 but the Brunsviga name continued to be used. Hand-held electronic calculators under the Brunsviga name are known, maybe badged for whoever owned the Brunsviga name at the time.

BRUNSVIGA-13RM Pinwheel Calculator

TECHNICAL DATA of the Mechanical Calculator BRUNSVIGA-13RM
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Dimensions:   (ca.) Width   = 11 3/4" / 30 cm
                     Depth   =   8    " / 20 cm
                     Height =   4 3/4" / 12 cm

Weight: (ca.) 14 lbs / 6.5 kg

Mechanics: Pin-Wheel / Sprossenrad
10s Carry Mechanism

Functions: Add, Subtract, Multiply, Divide
Back-Transfer / Rueckuebertragung

Registers:       Input       = 10 Decimals
                     Counter     =   8 Decimals
                     Arithmetic = 13 Decimals
Manufacturer:
                     O L Y M P I A - Werke AG
                     - BRUNSVIGA-Werke -
                     Wilhelmshaven
                     West Germany
                     (Made in Spain)
                     1968

This was very kindly donated by Amanda Freestone from her father's collection.

Details from http://public.beuth-hochschule.de/~hamann/brunsviga/index.html

Operating Instructions for 13RM can be found at http://public.beuth-hochschule.de/~hamann/brunsviga/brunsviga-13rm/manual/index.html

How a Pinwheel calculator works: http://www.hpmuseum.org/mechwork.htm

Manufacturer: Olympia
Date: 1968

This exhibit has a reference ID of CH5397. Please quote this reference ID in any communication with the Centre for Computing History.