Inspection matters, and the **Steinel seam tester** makes it fast. This angled fillet tool slides along the joint to feel for under‑fused sections, voids and weak edges so you can fix issues before they become leaks. The robust tip provides clear feedback without gouging sound welds, while the offset handle keeps hands away from hot surfaces. Use it straight after welding to prove continuity, or during QA to confirm perimeter seams and patches have the bond you expect. Paired with HG‑series hot air tools and rollers, the **Steinel seam tester** completes a kit that delivers confident, documented results—simple, durable and indispensable on a professional roof.