Select the right gauge for the job.

• Gauges read most accurately in the middle two thirds of the dial
• Accuracy rating is based on full-scale (1)
• Our gauges come with everything you need for set up
  • 1/4" Brass Tee
  • 1/4" Brass Nipple
  • 1/4" Drain Cock
  • Quick Disconnect Couplings - Male and Female

Gauge Selection Chart

Gauge Selection Notes

Some manufacturers rate the accuracy of gauges at 2-1-2. This means 2% for the first third, 1% for the middle two-thirds and 2% for the last third.

Example #1: A zero to 100 PSI gauge would read 2% accuracy from 0-33, 1% from 34-66 and 2% from 67-100.

Our gauges are rated at 1/2% (or 1% if 2 1/2" dial) of full scale.

Example #2: A zero to 100 PSI gauge, 1/2% accuracy rated, would read within 0.5 PSI accuracy at both 10 PSI and at 90 PSI.

Example #3: A zero to 60 PSI gauge, 1/2% accuracy rated, would read within 0.3 PSI accuracy at both 10 PSI and at 50 PSI.

For best accuracy it makes sense to use a gauge with a smallest range. If gauge readings are anticipated to be around 30 PSI all the time, it would be better to use a 0-60 PSI gauge than a 0-100. The demarcation increments are wider and easier to read with the smaller range gauge.

Protective Gauge Boots for 4" and 2 1/2" diameter gauges

Protect your gauges against shock, impacts and corrosion. Boot si sold separately from gauge. Install it on gauge by hand.

Certified Gauges

Need certification? We offer dead-weight testing and traceable NIST certificates for an additional fee.