metric thread gage question

[metalmagpie]

I'm shopping for a metric thread gage. I have one somewhere, but I need at least one more because I can't seem to find my previous one, sigh.

Looking at the less expensive gages, I notice that they say thay have both 55 and 60 degree thread forms. Why is this?

metalmagpie

 

[MattiJ]

I'm shopping for a metric thread gage. I have one somewhere, but I need at least one more because I can't seem to find my previous one, sigh.

Looking at the less expensive gages, I notice that they say thay have both 55 and 60 degree thread forms. Why is this?

metalmagpie

55 degree for the ”metric world” whitworth pipe thread

 

[tdmidget]

I'm shopping for a metric thread gage. I have one somewhere, but I need at least one more because I can't seem to find my previous one, sigh.

Looking at the less expensive gages, I notice that they say thay have both 55 and 60 degree thread forms. Why is this?

metalmagpie

"Thread" gage or "pitch" gage?
"