This is an old revision of the document!
Mechanical calculators: FACIT 10-04
I purchased this machine in January 2013 at an online auction site. The 10-04 model was the very last manual calculator manufactired by Facit in Sweden. The model is very similar to the CM2-16, with the same specs, and a few external differences, including a plastic cover. It has a handle that pops out in the lower front to help moving the machine around in an office desk.
This one is in pretty goood shape, but the lubrication inside is the most deteriorated I have seen. Much grease has been applied, and it hardened in some parts. When I got it, it was completely stuck. Some directed cleaning and a thorough spray of kerosene have loosened part of the main subsystems, but it was not nearly enough. A full disassembly and cleaning is required, so that the machine can operate smoothly again. This is a project for my next vacations.
There's no reference as to the year of manufacture, but the 10-04 model was produced in Facit's final years of operation in Sweden, between 1967 and 1969 ( details here and here).
Have a mechanical calculator stored somewhere, and want to get rid of it? Send it to me!
c1969 FACIT 10-04 s/n 1953833
As purchased, in January 2013
Detail of the degraded lubrication
Insides, pre-cleaning
Right side, partial disassembly
Left side, view of the reset mechanisms
Back left corner locking mechanisms
Back left corner, almost fully disassembled
The 10-04 is almost identical to the CM2-16, but notice that many parts of the 10-04 are yellow from zinc plating, while CM2-16 parts have a natural steel color.
Most small parts were cleaned using a small ultrasonic cleaning device, in kerosene.
Comparison to the FACIT CM2-16. Only small details vary between the two models.
Final assembly
More about this machine
FACIT CA2-16, an electrical-driven version of the CM2-16
The evolution of FACIT calculators
