Recommend a good pocket calculator

[Bill_729]

And here I thought a "mil" was .001 inch. I've been making stuff wrong for years

Since you brought it up, I heard a friend call .00001" a "mil". I said that .000001" would make more sense to me. He did not have an explanation, but it was apparently the termination they used where he worked. Maybe someone here can resolve this, or provide us with further insight!

Bill_729

 

[Z2V]

I think you are correct Bill

 

[Bill_729]

I think you are correct Bill

Thank you for the vote of confidence. Your attachment shows my reasoning.
Do you "know" that this is the terminology used in the field? (I'm just an innocent bystander! ha)

 

[Z2V]

I took up the hobby when I retired from a 40 year career in a different trade. I never worked as a machinist so I can not answer your question. I’m sure others will add to the conversation