3D Instruments Direct Drive Rugged Test Gauges

We've replaced the antiquated C shape Bourdon tube in our pressure gauges with a unique helically wound Bourdon, The Direct Drive Difference. Our Bourdon coil is coupled directly to the shaft-pointer, the only moving part.
Fewer parts, fewer problems. Regular calibration is eliminated because there are no complex, wear-prone parts. Linearity is built-in; no span adjustment is necessary-ever. And accuracy is maintained throughout the life of the gauge, many times longer than those old-fashioned designs.

The Direct Drive design gives instant response while resisting pointer pulsation. Overpressure? Even 150% of full scale will not affect the accuracy of most gauges. and it takes pressures of 500% greater than dial range to result in sensing coil rupture. Even when subject to abuse, Direct Drive gauges last longer.

  • Helically Wound Bourdon Tube in Inconel X-750
  • All Wetted Parts in 316SS or Inconel
  • Precision Anti-Friction Sapphire Shaft Bearings
  • High Impact Resistant Cycolac Case
  • Needle Edged Pointer
  • Adjustable Zero Set-Point
  • One Moving Part
User Benefits
  • No recalibration required
  • Longer field service life
  • Greater reading accuracy
  • Maintenance free
  • Corrosion resistant
  • Safer operation (UL Listed)
$439.90 - $578.00USD / Each

2 variations of this product are available.

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Compareitem specifications
Accuracy Max Pressure (PSI) Description
Availability Pricing
3D Instruments 25544-22B53 4.5" Test Gauge, Bottom Mount, 0 to 60 psi, Red EW-68424-01 Mfr # 25544-22B53
±0.25% full-scale 60 4.5" Test Gauge, Bottom Mount, 0 to 60 psi, Red
$439.90USD / Each
3D Instruments 25545-27B53 6" Test Gauge, Bottom Mount, 0 to 500 psi, Red EW-68424-48 Mfr # 25545-27B53
±0.25% full-scale 500 6" Test Gauge, Bottom Mount, 0 to 500 psi, Red
$578.00USD / Each
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