Stainless Steel Glycerin Filled Compound Gauge with 1/4" NPT Base

Stainless Steel Glycerin Filled Compound Gauge with 1/4" NPT Base - (-30)-150 PSI

QSP Glycerin filled compound gauge has a 1/4" MNPT stainless steel connection with a readout of (-30)-0-150 PSI. 

Use a compound gauge when measuring a system that is pushing both positive and negative pressure on the gauge.