Dating curta calculators
Such service performed on a Type II will cost 0.
This level of service involves disassembly of every part and subassembly, including the entire lower half of the machine.
Costs for a simple cleaning of a Type II typically range from 5 to 5.
As you might expect, the charge is dependent on the time and effort needed to remove the old dried oils and accumulated dirt, as well as the difficulty of disassembly due to corrosion or previous poor workmanship.
Typically, cleaning a Curta involves complete disassembly of the upper carriage and partial disassembly of the main body.
The main body will be disassembled further if something internal is bent, out of adjustment, or broken.
Charges for a simple cleaning and lubrication of a Curta Type I typically range from 5 to 5, including consumables.
Significant time is needed to achieve a complete and full restoration.
Turn around time for cleaning a Curta varies, and can be many months depending on scheduling and work load.
To complicate matters, volatile compounds in the original lubricating oils can evaporate, leaving behind a sticky residue that impedes the movement of sliding gears and levers.
Such conditions often result in the application of excessive forces to operate the instrument.
In addition, original factory tools and component clamping fixtures are used in accordance with procedures and workmanship standards set forth by Contina AG.