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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
Dimensions: (ca.) Width = 11 3/4" / 30 cm
Weight: (ca.) 14 lbs / 6.5 kg
Mechanics: Pin-Wheel / Sprossenrad
Functions: Add, Subtract, Multiply, Divide
Registers: Input = 10 Decimals
Counter = 8 Decimals
Arithmetic = 13 Decimals
O L Y M P I A - Werke AG
- BRUNSVIGA-Werke -
(Made in Spain)
Our calculator is in excellent condition and has a serial number of 27733
This was very kindly donated by Amanda Freestone from her father's collection.
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
This exhibit has a reference ID of CH5397. Please quote this reference ID in any communication with the Centre for Computing History.