Manufactured by G.A.L. Gage Co., the 8-Piece Fillet Weld Set (available in Inch as Cat # 81 or Metric as Cat # 85) is a precision inspection kit designed for accurate measurement of fillet weld leg and throat sizes. Featuring a durable, fan-style multi-blade assembly held together by a secure retaining thumb nut, this professional-grade set enables welding inspectors, quality control (QC) personnel, and fabricators to verify weld dimensions quickly and accurately in shop or field environments.
Ensuring structural integrity and compliance with design codes requires precise weld sizing. The 8-Piece Fillet Weld Set provides a comprehensive range of stainless steel gauges that swing smoothly into position for rapid comparison. The Cat # 81 (Inch version) covers sizes from 1-1/8" to 2" in 1/8" increments, while the Cat # 85 (Metric version) covers sizes from 28mm to 51mm. Each individual blade is clearly laser-etched with its respective size designation, providing long-lasting legibility even under heavy industrial use.
Kit Contents
- Fillet Weld 1-1/8"
- Fillet Weld 1-1/4"
- Fillet Weld 1-3/8"
- Fillet Weld 1-1/2"
- Fillet Weld 1-5/8"
- Fillet Weld 1-3/4"
- Fillet Weld 1-7/8"
- Fillet Weld 2"
Certification
The Cat # 81 Fillet Weld Gauge Set can be certified. The certification is not included in the base price and is available at an additional cost. Just add it to cart if your quality control or compliance standards require it.
Features
- Dual Measurement Capabilities: Accurately checks both fillet leg size and fillet throat size
- Precision Increments Cat # 81 (Inch): 1-1/8" to 2" in 1/8" increments
- Heavy-Duty Stainless Steel: Fabricated from high-grade stainless steel for superior corrosion resistance and longevity
- Compact & Fan-Style Design: Blades fan out easily for selection and fold compactly into a pocket-sized tool for maximum portability
- Permanent Laser-Etched Markings: High-contrast size markings resist wear from harsh shop environments
Applications
- Structural Steel Fabrication: Verifying fillet weld sizes on beams, columns, gussets, and heavy structural connections
- Petrochemical & Energy Plants: Inspecting critical welds on piping supports, tanks, and structural skids
- Bridge & Infrastructure Construction: Ensuring compliance with AWS (American Welding Society) and international structural welding codes
- Shipbuilding & Marine Engineering: Inspecting hull frames, bulkheads, and deck attachments
- Welding Training & Quality Control (QC): Essential toolkit component for certified welding inspectors (CWI) and educational institutions
Specifications
| Scale | Inch or Metric |
| Size Range (Inch - Cat # 81) | 1-1/8" to 2" by 1/8" increments |
| Material | Stainless Steel |
How to Use
- Select the Appropriate Blade: Fan out the gauge blades and select the blade corresponding to the expected fillet weld size (leg or throat dimension)
- Check Fillet Leg Size: Place the straight edge of the blade against one member of the joint and the curved/machined edge against the weld face/toe to verify correct leg dimensions
- Check Fillet Throat Size: Use the designated throat-checking edge of the blade to ensure the theoretical throat thickness meets blueprint specifications
- Inspect & Verify: A proper fit indicates the weld meets the required dimensional standard; gaps or interference indicate undersized or oversized welds
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