Using Pipe Ring & Plug Thread Gages
NPTF (Dryseal) 3 and 6 Step Gages
Ring Gages
If L1 ring goes on to the maximum notch
The L2 ring must also go on to the maximum notch within 1/2 turn
and the six step plain ring must go between the MX and MXT notch.
If L1 ring goes on to the basic notch
The L2 ring must also go on to the basic notch within 1/2 turn
and the six step plain ring must go between the B and BT notch.
If L1 ring goes on to the minimum notch
The L2 ring must also go on to the minimum notch within 1/2 turn
and the six step plain ring must go between the MN and MNT notch.
