A style/usage question about QCTP - how do you run yours? (question #2, less dumb)

[magicniner]

A lot of good QCTPs (except the ones offering a fixed but semi-useless set of angle options) have a vertical through hole, it's to allow you to use a pin and a hole in the base, or a hole in a fixed base plate, to allow instant setting at a reference angle.