Brunsviga twin calculating machine, model D13Z, (1
- Made:
- 1935-1939 in Braunschweig
- maker:
- Grimme Natalis and Co
Brunsviga twin calculating machine, model D13Z, (13 register) by Grimme, Natalis and Company, on wooden base with metal cover, Serial No.208021. Consisting of a pair of 10 digit calculators coupled together. Presnted to the National Institute of Oceanography by Dr J.N.Carruthers.
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