Soroban
Halbreformierter japanischer Abakus
ab 2000 BC
Soroban
Half Reformed Japanese Abacus
from 2000 B.C.
It can be assumed due to the closed backside that this Soroban is an early variant of the 1 to 5 Soroban. The rods are made of metal and show some corrosion spots. Except for the middle place of this 15-digit Soroban, all places on the middle bar have a designation in Kanji characters. The workmanship of the frame with a precisely executed miter cut is indicative of a so-called Banshu Soroban.
- Inventory number:
- FDM8802
- Year of invention:
- ab -2000
- Year of manufacture:
- ab 1900
- Main category:
- Einfaches Rechenhilfsmittel
- Subcategories:
- Abakus, Soroban
- Capacity:
- 15 (EW) x 5 (UZW) x 1 (RW)
- Dimensions (H x B x T):
- 3 x 34 x 11 cm
- Weight:
- 590 grams
- Literature:
- Knott: „The Abacus in its historic and scientific aspects“, in: Transatlantic Asian Society Japan 14, 1886, p. 18-71
- Kojima, Takashi: Advanced Abacus, Japanese theory and practice. Tokyo 1991
- Moon, Parry: The Abacus: Its History, Its Design, Its Possibilities in the Modern World. New York 1971
- Pullan, J. M.: The History of the Abacus. London 1968