What Is Automatic Weld Size Gauge and How Do I Use It? Welding Guage

 The AWS Gauge or Automatic Weld Size Gauge performs several functions similar to the Cam Bridge Gauge.

With this gauge, you can:
Measure actual fillet weld leg length
Check concavity of a fillet weld
Check permissible convexity
Measure weld reinforcement

1. To Determine the Size of a Fillet Weld

Place the gauge against the toe of the fillet weld and slide pointer out until it touches structure as shown. Read "Size of the Fillet Weld" on the face of gauge as indicated by arrow.

2. To Check the Permissible Tolerance of Convexity

After the size of a convex weld has been determined, place the gauge against the structure and slide pointer until it touches face of fillet weld as shown. The maximum convexity should not be greater than indicated by "Maximum Convexity Scale" as indicated by arrow for the size of fillet being checked.

3. To Check the Permissible Tolerance of Concavity and Underfill

Place gauge against structure and slide pointer out until it touches the face of the fillet weld as shown. If the pointer does not touch as shown, the fillet requires additional weld metal.

4. To Check the Permissible Tolerance of Reinforcement

Place gauge so that reinforcement will come between legs of gauge and slide pointer out until it touches the face of weld as shown.