brownmoose13 When was the last time you calibrated your machine?
What does it matter?
When I go in to have it done, I do not know the lie angle, but I do know that I want/need it changed a certain direction.
I may have them check 'the number' so I can check it against stated spec by the company. But that number matters not as to what I'm having done.
So, if the machine shows 4* when it's supposed to show zero, and I want the angle changed by 2, the machine, as set, is going to change it exactly 2. Per graduations marks on machine. Those marks have no tolerance. If using anything digital, they surely would.
Besides all that, who here amongst us needs exactly perfect??? Our F'N swings are merely guesses. 🤣