Need help with a RD V gauge

[thingsinherited]

Greetings, do you know what this thin metal gauge was made to measure?

[wastingtime101 · Accepted solution]

@thingsinherited 

Look up: Tubing & Casing Thread Profile Gauge

Check this:

[thingsinherited]

Excellent! I figured it was oilfield or pipe related but did not think to search threads.

Thanks, Ron    dba    thingsinherited