Standard Soroban (Abacus) / 23 digits [43300]

Standard Soroban (Abacus) / 23 digits [43300]
- East Abacus - Soroban. Very popular.
- Current standard type
- birch ball, ebony frame / 130.62.5 (inch) / 5.7 (oz) / Japan Import
- 1 ball (having a value of five) and 4 balls (having a value of one)
Common perception of all over the world
Abacus have long history. Perhaps it's history equal to human's. There are various method and tools to count, but common concept is "more easier to handle number". Interestingly, the method for this purpose is almost same from east to west.

What's Soroban ?
Soroban is a kind of these tools (Abacus). Especially, these in East Asia are called "Soroban". The original Abacus was consisted with ditch on plane and the ball moving on it. The shape and number of balls have been changed for usefulness. For example - there are some scene required to calculate speedy. The number of balls and shape - this is the current standard.

Features of standard
1. Material - Birch ball. Move smoothly, stop firmly. Good material (wood) have this confliction. Birch is most popular. The balls of Abacus grow like your skill. Gradually, the feature of wood become clearly.
2. Digits - 23. This number is most popular. Almost all case, 23 digits is sufficient to handle number. And length fits to bag.

Soroban grow also
Soroban (Abacus) grow like your skill, but need definite time. So, in case you are going to handle for a long time. Good one become good your "own" Soroban. In that sense, this one is standard.

Material : birch ball, ebony frame / 13Ã—0.6Ã—2.5 (inch) / 5.7 (oz) / 1 ball (having a value of five) and 4 balls (having a value of one)
Country USA
Brand Tomoe Soroban
Manufacturer トモエ算盤
Binding Toy
ItemPartNumber 43300
Model 43300
Color Black
Size ワンサイズ
EANs 4906935433004
ReleaseDate 0000-00-00

Country	USA
Brand	Tomoe Soroban
Manufacturer	トモエ算盤
Binding	Toy
ItemPartNumber	43300
Model	43300
Color	Black
Size	ワンサイズ
EANs	4906935433004
ReleaseDate	0000-00-00

Standard Soroban (Abacus) / 23 digits [43300]

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