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Pit Gauge

N88-1 Tri-Gauge
Range: +/-13mm (0.500″)
Resolution: 0.5mm (0.010″)

The Tri-Gauge®pit gauge Part No. N88L-1 is today’s most versatile Lever Pit Gauge, with its Metric and dual Imperial Scales. Additionally, the Tri-Gauge® serves as a basic Weld Inspection Gauge for; Undercut Depth, Weld Crown Height, a Porosity (diameter) Comparitor, and Metric and Imperial Rules. This Tri-Gauge® is fitted with a Patented pointer Offset Correction® for improved accuracy and repeatability, and lever Pit Gauges are intended to evaluate corrosion and not as an absolute measuring tool. It is supplied with a Pocket Protector-type Case and Instructions.

N88L-2 Junior Tri-Gauge
Range: +/- 3mm (0.100″)
Resolution: 0.2mm (0.005″)

The Junior Tri-Gauge VM® Lever Type Pit Gauge is today’s most accurate Lever Pit Gauge, with a continuing tradition of Metric and dual Imperial Scales. This Junior Tri-Gauge® serves its traditional use as a Pit Depth Gauge and as a Weld Inspection Gauge for Weld Undercut Depth, Weld Crown Height, and both Metric and Imperial Rules. Like the original Tri-Gauge®, Junior Tri-Gauges is fitted with our Contact Point Offset Correction® for improved accuracy and repeatability. Any Lever Pit Gauge is intended to evaluate corrosion/erosion and not an absolute measuring tool. It comes with a Vinyl Sheath Storage Case and Instructions.

N88-2 Basic Pit Gauge 2.5″ Center Mount Blade
Measuring Range: 0.0-0.5″ (0.0 – 12.7 mm)
Resolution: 0.001″ (0.01 mm)
Dial Diameter: 1.4″ (35.5 mm)

Center-mount 2.5″ (63.5 mm) Blade

Available with dial or digital indicators

The Basic Pit Gauge N88-2 is used to measure the Pit Depth or the amount of surface corrosion on metal constructions like pipelines, support structures, storage tanks, drill pipes, steel bridges, aircraft components or concrete structures.

The N88-2 Pit Gauges assure compliance with vessel, pipeline and tank specifications for corrosion and erosion depth measurement.

N88-3 Basic Pit with 3.5″ Centre Mount Blade
Measuring Range: 0.0-0.5″ (0.0 – 12.7 mm)
Resolution: 0.001″ (0.01 mm)
Center-mount 3.5″ (89 mm) Blade

N88-3M Basic Pit with 3.5″ Centre Mount Magnetic Blade
Measuring Range: 0.0-0.5″ (0.0 – 12.7 mm)
Resolution: 0.001″ (0.01 mm)
Center-mount c/w Two(2) magnetic cartridges 3 1/4″ Blade

N88-4 Pocket Pit with 1.5″ Dual Edge Blade-Reversible Blade
Measuring Range: 0.0-0.5″ (0.0 – 12.7 mm)
Resolution: 0.001″ (0.01 mm)
Center-mount 1.5″ (38 mm) Dual Edge Blade (Reversible)

N88-5 Reaching Pit Gauge with 4.75″ Blade
Measuring Range: 0.0-0.5″ (0.0 – 12.7 mm)
Resolution: 0.001″ (0.01 mm)
Center-mount 4.75″ (121 mm) Blade

N88-5M Reaching Pit Magnetic 4.75″ Blade

N88-6 Reaching Pit Gauge Plus 6″ Blade
Measuring Range: 0.0-0.5″ (0.0 – 12.7 mm)
Resolution: 0.001″ (0.01 mm)
Center-mount 6in (152mm) Blade

N88-6M Reaching Pit Plus 6″ Magnetic Blade