Pit Gauge
Lever Pit Gauge
Pit Gauge or lever pit guages are the simplest form of Pit Gauges, with an original Patent issued in 1935 as a Pipe Pit Gauge (J.C. Stirling). Until Western Instruments introduced the Tri-Gauge in 2004, no changes had been made to the original design of Stirling’s. Western’s improved designs make our Pointer Type Pit Gauges effective for Weld Measurement Gauges for Weld Undercut and Weld Reinforcement.

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 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 Gauges, 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.
Standard Pit Gauges
All Gauges come with either Analog Dial Indicator (Imperial or Metric) or Digital Indicator, see below.

N88-2 Basic Pit 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

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 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 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
Digital

Accessories

#1 Standard Contact Point

#2 Conical Contact Point

#3 Needle Contact Point

Digital Indicator

Contact Point Extension

Imperial Indicator

Metric Indicator