In a similar fashion, the gauge can be used for measuring leg length of a fillet in any position. Only one thing needs to be remembered, the gauge must be suitable for the fillet size that needs to be inspected. And finally, to measure undercuts or pits, place the legs of the gauge squarely on the surface of the plate and lower the tip into the undercut or pit. The amount of undercut is read from this scale. This pit reads 1/16 of one inch or approx 1.6 mm. Watch this video of the Bridge Cam Gauge

The leg length refers to the distance from the root to the toe and should be measured in both directions using fillet gauges. The fillet weld measurements are carried out using two approaches:

Welders & Welding Inspectors use welding gauges to measure the weld size and to make sure that they are within the acceptance limit. A concave fillet weld is a type of weld where the face profile dips inward and the throat size is smaller than leg length. This type of weld is good for cyclic loading, as it can withstand repeated stress without breaking. We all know someone with a .303 rifle, or own one ourselves. In fact I believe all new FAC holders should get out and shoot one at some point, just because. I have a modest collection of .303 Sporting and military rifles, including Lee Speed and postwar No1Mk3 commercial examples here in the armoury along with later ones such as the 1920 Lithgow below. It can be difficult to answer this question. In general, most professionals select rugged leaf-type weld gauges, most often from stainless steel. These materials are highly durable, fast, and accurate. Some professionals prefer Bridge Cam or AWS gauges if they need a gagging fillet weld specifically. Final Thoughts

Before measuring the welds using the fillet gauge- perform the visual inspection and decide the type of fillet weld for: For example, for the Bridge Cam gauge from Gal Gage, it’s good to use their calibration services. The calibration is carried out for: Primarily these comments are on erosion gauges in general, not this individual product. First you have to keep detailed records for a long time and you have to be firing a lot of rounds. You have to develop a technique of reading the gauge that is exactly the same each time. The depth reading you record can vary with the position of your head. Additionally the gauge doesn't really give you a failure point but rather a relative change over time. So you have to record your first reading then compare subsequent readings to get the relative change in wear. Since there really isn't any "failure" point, you just see slowly deteriorating accuracy. So unless you compare accuracy against throat erosion, then you don't really know what an individual reading means.

Other features which can be found in certain snap gauge series is IP54 protection (prevents ingress of dust which causes harm and protects against liquids splashing from any angle), data output capability and manufacturer’s inspection certificates traceable to DKD. To measure the angle of preparation of this pipe, place the legs of the gauge squarely on the surface of the pipe and lower the rotating segment until it rests squarely on the bevel. This bevel angle measures approximately 42 degrees. There are other kind of gages available in the market too, that do not involve any slider in the instrument, and only involve putting the instrument on the fillet, and looking up a direct reading for measuring the throat size of the fillet weld. Next, you should select the standard fillet gauge side to be used for the fillet weld size measurements.

SKU: F30.0100 Category: Welding Inspection Description Product Information The Bridge Cam Gauge by GAL GAGE Company is one of our most versatile gauges available. With it, you can perform several different types of measurements of welds in both inches or millimetres.

Measuring Tools - Barrel Throat Erosion Gauges

Different models will also use different styles of scale. Some snap gauges will use an indicator-type dial with a linear scale, whereas others use a plus and minus format. In these models, the gauge is zeroed off with limits set at either side (left side is negative, meaning the measured object is smaller than the desired size, whereas the right side is positive, meaning the measured object is larger than the desired size). If the object falls outside either side’s tolerance, it will fail inspection. In AWS-CWI certifications measurements of a fillet weld are taught using the Standard Fillet weld gauge set for the most commonly used weld sizes, say 1/8 inch to 1 inch as shown in the below picture. If there is a space between this protrusion and the weld, the weld is concave, which it should not be. You will need to adjust your welding so that it fits appropriately. The following steps hold good for the gauges shown in the pictures. There are of course other kinds of gauges available as well in the market.