Japanese Soroban Abacus Calculator Tool. This soroban is made of wood with a dark brown color. It is in excellent working order. There is carved kanji on the back side. It is a mathematics calculating tool and is considered the first calculator in Japan.
eBay
1925 Magazine ad.
eBay
Dials turn and numbers change.
eBay
Japanese Soroban Abacus Calculator Tool. This soroban is made of wood with a dark brown color. It is in excellent working order. There is carved kanji on the back side. It is a mathematics calculating tool and is considered the first calculator in Japan.
eBay
OLIVETTI DIVISUMMA 24 - VINTAGE ANTICA CALCOLATRICE - OLD CALCULATOR OLIVETTI.
eBay
This is a rare example of an early Otis King's cylindrical calculator model 'L' type A, but with 416 and 417 scales, much less common then the later model L's which had 429 and 430 scales. Patentees & Sole Manufacturers, Carbic Limited, 51 Holborn Viaduct, London E.C.1.'.
eBay
Antique Vintage Corona Business Office Calculator Adding Machine Untested. See Pictures for condition. Check out my store for more great deals.
eBay
ONE SHEET, PRINTED ON BOTH SIDES. A HARD TO FIND ITEM!
eBay