Odhner Calculator

I got the mechanical calculator at the antique shop in January, 2003. It has trademark of "Original Odhner", is made in Sweden and is painted deep green. The base plate has width depth of 14cm of 24cm, and 6kg of weight. There is the number of effective beams 19. Manufacture time is not known. However, I judge that it was manufactured by the following reason early in the 1920s.

A serial number is 646**.
The clear lever of new series is a crank formula. However, this article is the knob of butterfly form.
An emblem is under trademark of "Original Odhner" at old series. However, there is nothing on this article.

The master of an antique shop says, "This machine is the rare thing currently used for years in the famous accountant's office." To be sure, "Odhner" is rare in Japan.
Although I think that almost all things are painted black, but it is painted green, it is new. it is rare that it is also green.
A mechanical calculator is famous for a "tiger-calculator" in Japan. Since a manufacture period is also long, a antique shop sometimes has. Moreover, the price is also stable. The "tiger-calculator" and the company which manufactured still do business. Of course, it is not manufacturing any longer. It is the company of a distribution system. There is a corner of a calculator in its web page and a collection and easy usage are put up (only Japanese).

removed the cover February. It could not bear, maintenance was called and I looked in. Although having been used carefully is felt, since it is old, dust has still collected. There is also a blunt lever of a motion. It lubricated so that neither a paint film nor a resin part could be touched, and when moved for a while, it came to move smoothly. When the knob of chromium plating which is in a beam sending lever especially was pushed, the portion as which a calculation result is displayed came to move every 1 figure exactly.
There is also a website explaining how this calculator is moving. However, it is receptive when it moves looking at a motion of the actual gear. A comfortable sound with which the gear meshes is gladder than anything.

I also own a "tiger-calculator" of 1960 age manufacture. However, this does not operate. That is, it is because someone dropped and parts have turned at several places. Although it decomposed in order that I may fix, since there is no sufficient time, it is remaining as it is.

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