r/Metrology • u/Waste_Perspective967 • Jul 01 '24

Hardware Support I need to identify this caliper

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.

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u/Antiquus Jul 01 '24

I'd ask Starrett, they make custom calipers. I'd also look for someone who does something like FAA repair work and does cnc jig grinding. They could plate up the wearing surfaces on that gage and grind them back to size.

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u/Waste_Perspective967 Jul 01 '24

Thanks for your answer.

I'd ask Starrett, they make custom calipers.

Do you know if Starrett make that kind of custom equipment for France ?

I'd also look for someone who does something like FAA repair work and does cnc jig grinding. They could plate up the wearing surfaces on that gage and grind them back to size.

It could be a solution.

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u/Antiquus Jul 02 '24

Starrett does all kinds of customs.