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Welding gauge WGU-7M/8M

Welding gauge WGU-7M/8M

Welding gauge that enables dimension measurement of weld overlay, fillet, leg length, etc. and even undercut depth measurement all in one.
· Supports measurements when doing various welding work.
· An extremely easy-to-read structure where the graduations can be read on the same plane.
· Undercut depth measurement, bevel angle, and opening angle measurement is possible.
· Enables discrepancy unevenness measurement, fillet leg length measurement, fillet neck thickness measurement, gap measurement, plate thickness measurement, etc.
· Very convenient for general welding work and welding work on steel frames and assemblies for construction, shipbuilding and bridges, etc.
· Used to measure the size, angle, etc. of weld overlay and fillet.


Part Number

Configured Part Number is shown.


What is welding gauge

Welding gauge is used to measure and check size of welded part throat
thickness required strength split that may casue damage irregularity of
under-cut and overlap etc.

Terms of welding

  • Throat thickness
    The thickness from welded portion at triangular cross-section when welding two faces at 90°.
  • Arc strike
    The arc that occurred to parts other than welding base metal when working on arc welding.
  • Pit
    Blow hole on surface due to poor welding.
  • Bead
    A belt shape rises after working on welding.
  • Under-Cut
    The irregular groove at the toe of a rod in the welding base metal.
  • Overlap
    The heap results from miss welding of the base metal.

Instructions for inspection

Inspection itemsPictureInstruction for measuring
Reasons of welding crack
1.Surface crack
on bead
Visual inspectin in priciple
Inspection of exterior and shape on welding bead
2.Pit on welding bead surfaceVisual inspection
3.Unevenness on welding bead surface
5.OverlapVisual inspection
6.Size of corner buds (Lack of throat thickness • foot length of fillet)
7.Excessive buds from groove welding
8.Arc strikeVisual inspection
Part Number
Part NumberVolume DiscountDays to ShipMass
Material Feature 1 Feature 2 Feature 3 Undercut depth measurement
End legs length measurement and management of both high and low beads
Measuring of Throat Thickness of the Ends
Gap Measurement Instrumental
Measuring of Plate Thickness Measuring the outer diameter of round objects, measuring the swelling of objects after pressure welding, etc. Use
2 Day(s) or more 190Stainless Steel (SUS410)Supports measurements when doing various welding workIt is very convenient for general welding work and the welding work of steel frames and assemblies required for construction, shipbuilding and bridges.An extremely easy-to-read construction where the scale can be read on the same plane.0–250–250~152~5RuleThe outer diameter of the round object is till φ30 mmMeasurement of weld overlay, fillet size and angle, etc.


  1. 1

Basic Information

Measuring bevel angle / groove angle(°) 0–70 Measuring Level Differences(mm) Eye Bolt Stride Width: 53/Comparable Level Variance Measurement: 0-25

Please check the type/dimensions/specifications of the part WGU-8M in the Welding gauge WGU-7M/8M series.

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