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Lot 0004

Description

2 Adding Devices
1) "Addometer", c. 1920. American 8-disc calculating device. With pen. (3-/2-) – And: 2) Bergman "Universal Calculator", 1924. Book-form index table with enclosed feed-rack adder "Correntator". (3/–)

2 Rechenhilfsmittel
1) "Addometer", um 1920. Amerikanisches 8-Scheiben-Lineal-Rechengerät mit Stift. (3-/2-) – Und: 2) Bergman "Universal Calculator", 1924. Tabellenkartei in Buchform mit einliegendem Zahnstangenaddierer "Correntator". (3/–)

Condition

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Buyer's Premium

  • 22.3%

2 Adding Devices

Estimate €150 - €300Nov 16, 2013
Starting Price €60
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Ships fromKoeln, DE