Fig. Inter. - Figure Interval. Increments between PSI numbers on gauge face. Grad. Inter. - Graduation Interval. Fractional increments between PSI numbers on gauge face.
Features:
ASME B40.1, Grade B accuracy (± 3-2-3 % accuracy)
ABS plastic case
Bronze bourdon tube / brass socket
Polycarbonate crystal
Black aluminum pointer
Brass movement with polyester segment, designed for extended wear
