These DH-Budenberg adapter sets provide all the fittings needed to attach nearly any gauge to the process connection.
Adapter sets available include:
BSP set: G1/2 M on G1/8, G1/4, G3/8 and G1/2 F
NPT set: G1/2 M on 1/8 NPT, 1/4 NPT, 3/8 NPT, and 1/2 NPT F
METRIC set: G1/2 M on M12 x 1.5 and M20 x 1.5 F