Lubing DTI

I have only repaired a couple of indicators. I disassembled them, cleaned with ultrasonic cleaner and clock cleaning solution, rinse and dry, then reassemble, lubricating with watch or clock oil, depending on size of bearing. oil must be used sparingly to prevent it spreading away from the bearing. Gear teeth are not oiled. Oil on hairsprings may cause the coils to stick together if the devise is jarred. It helps if you have repaired a few watches. The skills are similar.
 
https://www.amazon.com/Moebius-Mult...UTF8&qid=1509339514&sr=8-1&keywords=watch+oil

This is the oil pros use. The reason that Mitutoyos, Starrett Last Word and others are considered throw aways is because they cost more to have repaired than to buy new, (in most cases). Mark Ratkowski does good work I hear. He's on FaceBook., MR TOOL REPAIR
For cleaning, Naptha is usually used. Freon is great too, Trichloroflouroethane or trichloroethane, but hard to source. Mineral spirits leaves residue.
To properly clean a DI, it should be disassembled.
 
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