What type of gauge is used for checking leg length and convexity?

What type of gauge is used for checking leg length and convexity?

• A. Fillet Gauge
• B. Groove Weld Gauge
• C. Depth Gauge
• D. Micrometer

Answer: (A)

Fillet weld gauges are used to inspect the geometry of fillet welds, including the two legs that form the fillet and the extra material that makes the weld rise above the base surface (the reinforcement or convexity). The gauge is designed with slots or blades that fit along each leg to check that their lengths match the specification, and with a reference edge or scale to measure how much the weld protrudes. This combination lets you verify both leg length and convexity quickly against the drawing tolerances, ensuring the weld has the proper size and appearance. Other tools aren’t a fit for this specific check: a groove weld gauge targets groove-weld preparations and root dimensions, a depth gauge measures depth features rather than surface weld geometry, and a micrometer measures overall thickness or diameter, not the leg lengths or reinforcement of a fillet weld.

Fillet weld gauges are used to inspect the geometry of fillet welds, including the two legs that form the fillet and the extra material that makes the weld rise above the base surface (the reinforcement or convexity). The gauge is designed with slots or blades that fit along each leg to check that their lengths match the specification, and with a reference edge or scale to measure how much the weld protrudes. This combination lets you verify both leg length and convexity quickly against the drawing tolerances, ensuring the weld has the proper size and appearance.

Other tools aren’t a fit for this specific check: a groove weld gauge targets groove-weld preparations and root dimensions, a depth gauge measures depth features rather than surface weld geometry, and a micrometer measures overall thickness or diameter, not the leg lengths or reinforcement of a fillet weld.