We use a combination of in-process checks and final inspection. During production, operators monitor key dimensions at each stage — after hobbing/shaping, after heat treatment, and after grinding. Critical parameters like tooth thickness and runout are checked on the machine before moving to the next step. Heat treatment is monitored with hardness test coupons that travel with the batch. Our final inspection includes a full dimensional check on a gear measuring center, with a report provided to you. This layered approach ensures that issues are caught early, not just at the end.