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PIC - Precision Instruments

Portable Inspector Test Gauges 311 & 4001

These all stainless steel gauges are designed for calibration, inspection and testing on production process applications. Typical applications are for R stamp vessel testing, hydrastatic tests, boiler testing, tank testing, fire pump testing, tire pressure, and pipe & tube testing.  The 4" gauge is accurate to 2A 0.5% of full scale reading and the 2.5" is 1A 1.0% of full scale reading. STANDARD with each gauge is a NIST traceable calibration certificate and serial number*.
Adjustable pointers and removable ring and glass provide easy access for resetting the pointer.  Gauges are available with optional glycerin fill (not recommended for gauges below 30 psi).

*Optional with Wika, McDaniel Controls, Ashcroft, US Gauge and Winters brand gauges.

  • Available Dial Sizes: 2 ½” (model 311D), 4" (model 4001)
  • Available Connection Sizes:  (Includes Built-in Snubber)
    1/4" NPT 2 ½" and 4" dial, 1/2" NPT 4" dial
  • Case and Bezel Material: Stainless Steel
  • Tube Material: 316 Stainless Steel
  • Socket Material: 316 Stainless Steel
  • Window: Laminated Safety Glass
  • Pointer: Adjustable slot on 2.5" dial and adjust screw on 4" gauge
  • Accuracy:  2 ½ Grade 1A 1.0% FS”; 4" Grade 2A 0.5% FS. Including Calibration Certificate Traceable to NIST.
  • Rubber Boot: Otptional Protective Boot
  • Liquid Fill: Glycerin fill is optional.  Not recommended for ranges below 30 psi.
  • Peak Reading Pointer:  Maximum reading pointer to record peak or burst pressure is optional.
  • Ranges: Download Specification Sheet for Range Selection.
  • Hydraulic or Pneumatic Test Pumps
  • Protective Boot (rubber cover) 2 ½" and 4" case
  • Diaphragm Seal
  • Needle Valve
  • External Snubber
  • Custom Dials