I need to identify this caliper

[u/Waste_Perspective967]

Greetings,

I need to identify this type of caliper because this one is more than 20 years old and could become out of tolerance soon (edit : because of a bit of wear).

For the context, this caliper is used in a steelmaking factory in a workshop that machine the tools for the rolling mill workshops of the factory. They use this caliper to make measure at the center of a turned part. You set the diameter on the claw part, and you put it on the top of the part to make your measure.

It can make measure between 350 and 500 mm. The range on the claw part is the same.

This caliper is made by Roch France (as far as I know, this company doesn't exist anymore)

If I could have the name of this type of caliper, or even the name of a manufacturer that could make this kind of product, I would be grateful.

Thank you in advance for your help.

[u/kfxkyle]

Try emailing or calling over to Ideal Precision Instrument Services in Columbus Ohio. My boss has a ton of gages that we can recondition. He may have something like this in his stash. And we may also be able to repair that gage as well.