- Joined
- Mar 25, 2018
- Messages
- 131
Included in an assortment of machinist tools a friend was generous enough to give me was a Brown & Sharpe depth gauge (their NO. 607) which, due to the fact that it didn't have a cap, was essentially useless. So today I embarked on a challenging experience to make one. Most difficult part was the internal thread at 7/16 - 40 tpi. 40 tpi on that radius is so very easy to overcut (.0005 made a big difference) and I couldn't find any screw chart information to use as a reference. It did take two tries but the second attempt made the grade. I was thrilled that my newly acquired PM1127 cut the threads as accurately as it did. Now to find a hole that needs measuring. 
The real thrill was setting it on my surface plate and having it "zero" just as it should. Impossible to describe the wonder of that feeling.
The real thrill was setting it on my surface plate and having it "zero" just as it should. Impossible to describe the wonder of that feeling.
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