Contractors Gauge

Marsh Instruments Contractors Gauge is an HVAC Service Gauge, newly redesigned gauge with a long-life movement to meet the needs of contractors in air conditioning, heating, plumbing and refrigeration. This rugged and reliable gauge is economically priced and offers many features normally found on more expensive gauges such as adjustable pointer, acrylic lens and polished stainless steel case.

Marsh Instruments Contractors Gauges are designed for use on ammonia compressors and other ammonia refrigeration equipment.



  • 4-1/2″ Dial
  • Polished Stainless Steel Case
  • Adjustable Pointer
  • 1% Accuracy