Bridge Cam Weld Gauge

The Bridge Cam Weld Gauge, popularly known as the Cambridge gauge is a precision instrument used to accurately to measure the important dimensions of weld preparations and of completed butt and fillet welds.

Apex Commercial Corporation, Kolkata offers Kristeel brand Bridge Cam Weld Gauge.

In science and engineering, a gauge is a tool used to take measurements or to display specific dimensional data. There are many different tools that can perform these tasks, from simple materials that can be used as measuring standards to sophisticated machinery. A gauge may be used to measure a physical quantity, such as thickness, a gap in space, the diameter of materials, or flow pressure, or it may be a device that shows the measurement of a monitored system by using a needle or pointer that moves along a scale that has been calibrated, depending on the application.

In fabrication businesses, visual aids like magnifying glasses and torches are used to measure the size of welds and support the detection of welding discontinuities. Bridge Cam Weld Gauges are distinctive and adaptable welding gauges that are primarily used on welded surfaces and connections. It serves as an extremely helpful visual inspection tool for weld inspectors. The Bridge Cam Weld Gauge has been seen as the industry-standard combination weld gauge. The gauge has a rotating dial and a sliding pointer for measuring weld characteristics. The measurement is shown in millimeters and inches up to 2″ or 60 mm. Once properly trained and initially under qualified supervision, a bridge cam gauge may be used. The gauge must be protected from all types of harm (shock, physical harm to the tip, scale, and gauge itself) so that one can trust the results it produces.

Measurements of the following can be made using the bridge cam gauge:

  1. Angle of preparation: Place the gauge’s legs squarely on the pipe’s surface and lower the rotating segment until it rests squarely on the pipe’s bevel to determine the pipe’s preparation angle.
  2. Misalignment (Hi-low): Weld joint misalignment is also measured using a bridge cam gauge, which is actually the best gauge for misalignment inspection. Place the gauge’s legs squarely on one surface of the pipe to measure outside misalignment, then lower the tip until it makes contact with the opposite pipe. Then, using this scale, the degree of misalignment is determined.
  3. Weld Reinforcement: Lower the gauge’s legs to the plate’s surface to measure the weld reinforcement. Then, using the tip, position it at the weld’s highest point. This scale is once more read to determine the Weld reinforcement dimension.
  4. Fillet Weld Throat Dimension: Use the mitre slide on the Bridge Cam gauge to measure the actual fillet weld throat dimension. To begin, extend the slide as far as it will go, position the slide’s tip on the weld face, and then lower the gauge until it touches the surfaces of both plates squarely. One can find the theoretical weld size by flipping the gauge over and looking at the scale on the back.
  5. Fillet weld Leg Length size: A bridge cam gauge makes it simple and quick to determine the leg length of a Fillet weld.  In order to allow for both of the gauge’s resting areas to be on the plate, the gauge is mounted to one member.  Leg length is measured on the angular scale in either inches or millimeters, and the gauge tip is adjusted to correspond to the height of the leg length.
  6. Measurement of undercuts and pits: Finally, to measure undercuts or pits, set the Bridge Cam Weld Gauge’s legs firmly on the plate’s surface and lower the tip into the depression. From this scale, the undercut is determined.


Calibration of Bridge Cam Gauge

An essential component of welding Quality Control & Assurance is welding gauge calibration. It guarantees that the welds adhere to the necessary standards and are at least the required minimum size. Weld gauges are used by welders and welding inspectors to gauge the size of the welds and determine whether they fall within the acceptable range. The weld may fail if it does not meet the strength requirements because it is not within specification. Utilizing the calibration block, the Bridge Cam Weld Gauge must be calibrated.

The calibration is done for:

  • Any observable signs of wear and tear.
  • Angular and linear scales.
  • Checking measurement tips.


We at, Apex Commercial Corporation, Kolkata also offer calibration for Kristeel brand Bridge Cam Weld Gauge.

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