Description
Gauge-Combo Welding Gauge – GAL #18
The GAL Gage CAT-20 Combo Welding Gauge is a versatile inspection tool designed to measure and verify multiple weld dimensions quickly and accurately. Fabricators, welders and welding inspectors use this gauge to check weld quality during fabrication and final inspection. Its compact design and multi-function capability make it one of the most commonly used weld inspection tools in workshops and on job sites.
The CAT-20 gauge allows operators to measure several important weld features using a single instrument. These measurements include fillet weld leg length, weld throat size, reinforcement height, undercut depth and bevel angle. This range of functions allows welders and inspectors to confirm that welds meet drawing requirements and welding procedure specifications.
The gauge features a sliding scale with clearly marked measurement graduations. Users can quickly adjust the scale to contact the weld surface and obtain an accurate reading. This simple design allows fast inspection without complex setup or additional measuring tools.
Manufacturers produce the CAT-20 gauge from high-quality stainless steel. Stainless steel construction provides excellent durability and corrosion resistance, allowing the tool to perform reliably in fabrication shops, field work and harsh industrial environments. The etched measurement markings remain easy to read even after extended use.
The compact size of the combo welding gauge makes it easy to carry in a pocket or tool kit. Many welders and inspectors keep one readily available for quick weld checks during fabrication. The lightweight design also makes it suitable for site work where portability is important.
This type of gauge is commonly used in structural steel fabrication, pipe welding, pressure vessel manufacturing and general engineering. Inspectors also use it when verifying welds against standards such as AWS, ASME or structural welding codes.
Overall, the GAL CAT-20 Combo Welding Gauge provides a practical and efficient solution for weld inspection. Its multi-purpose design allows users to measure several weld characteristics with one compact tool, helping maintain consistent weld quality across fabrication projects.





