Calculator/adding machine, Curta type II no. 509495 - Aluminium, Steel - 1956

Description
Calculator/adding machine, Curta type II no. 509495 - Aluminium, Steel - 1956
Liechtenstein

Vintage mechanical calculator Curta II (model 2), known as the "pepper grinder."
The first pocket calculator for engineers and scientist, after the slide rule.
Wonderful design by Curt Herzstark, and a jewel of fine mechanics.

Serial number 506085 (manufactured 1955),
Excellent working condition.
Manufactured by Contina Ltd Mauren, in Liechtenstein.

Fully serviced and checked

No dents or marks or scratches.
Body still has its dark black colour, no discoloration.
Minor signs of use: a little wear on the clearing plate, where clearing ring folds back, tiny marks of the pins on the rail of the bottom grip.

This machine can add, subtract, multiply and divide very easily.
Other operations like square root extraction can be performed with more elaborate algorithms.
Numerous sites explain its usage and design, including simulators.
A copy of the user manual will be offered to the lucky buyer.

http://www.curtamania.com/curta/code/type_and_age_of_your_curta.php

Lot details
Object
Calculator/adding machine, Curta type II no. 509495
Material
Aluminium, Steel
Designer/ Artist
Curt Herzstark
Manufacturer/ Brand
contina Ltd Mauren
Model/ Name
curta
Estimated Period
1956
Country of Origin
Liechtenstein
Condition
As new - unused
Dimensions
11×6.5×6.5 cm
Weight
373 g
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