Originally Posted by rainshot
If you’ve ever seen the little Christmas tree thread dial on a metric lathe for threading you’ll faint.

I haven’t fainted yet and I can go back and forth as needed. Try to explain some reason it makes more sense to specify thread pitch by the number of threads per inch, rather than the actual pitch dimension of the distance from a point on one thread to the same point on another thread.


Mathew 22: 37-39