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This machine was manufactured by Odhner in Sweden, in xxxx (see here). It was my first mechanical calculator, a gift from my wife's cousin, in December 2009. It was all locked up, but disassembling the cover and trying to understand its workings quickly got me to unlock it. Lubricating and cleaning without disassembly, I got it to work smoothly. It is only missing the handle of the accumulator reset crank, and the button of the backtransfer mechanism.

I have no pictures of the insides of this machine, and no plans to disassemble it, since it is in such a good working condition. I would like to restore the exterior, but I tend to let it stay as it is, with all the apparent wear from many years of use.

Have a mechanical calculator stored somewhere, and want to get rid of it? Send it to me!

1955 Original Odhner model 227 s/n 820036

Photos: under construction

http://www.youtube.com/watch?v=LghScXcX-SI

http://www.rechenmaschinen-illustrated.com/pictures_odhner.htm

http://w1.131.telia.com/~u13101111/odhnermod.html