Attributes . (1) 1-1/2" Steel 1/8" NPT Back Connected Gauge (1) 1-1/2" Steel 1/8" NPT Lower Connected Gauge, (1) 2" 1/4" NPT Back Connected Steel Gauge, (1) 2" 1/4" NPT Lower Connected Steel Gauge, (1) 2-1/2" 1/4" NPT Lower Connected Steel Gauge, (1) 2-1/2" Glycerin Filled 1/4" NPT Lower Connected Stainless Steel Gauge, All are 0 to 100 PSI with Brass Internals . Names