I have one of those gauges, and I even looked at it once right after I bought it! 
When I make threads, I'm more often than not using pitch-specific full-form inserts. With those, I just have to align the QCTP to be perfectly square, and away we go!
If you are grinding an ACME tool by hand, I find it easier to make a nearly sharp point tool with the 29º included angle first, then carefully grind the tip a tiny bit at a time (no pun intended) until the tip fits into it's proper notch in the gauge.
When I make threads, I'm more often than not using pitch-specific full-form inserts. With those, I just have to align the QCTP to be perfectly square, and away we go!
If you are grinding an ACME tool by hand, I find it easier to make a nearly sharp point tool with the 29º included angle first, then carefully grind the tip a tiny bit at a time (no pun intended) until the tip fits into it's proper notch in the gauge.