Optical measurement of groove width and flatness Process control. In addition to all upstream quality assurance measures we also insist on Quality Assurance during the production process. This happens at many levels, such as worker self-monitoring, automated tests of every part, audit inspections and other measures. Quality assurance is implemented either directly within the production line or in climate controlled test labs. The use of computer-assisted systems is indispensable.

In the assembly hall, I was struck by how many screws are tightened in automatic stations. How do you assure quality there? Quality assurance is built into the fully automatic screw fastening stations. We tighten the screws exactly to our specifications with torque and rotation angle control. No human can provide this precision. What does an evaluation of a new part involve at STIHL? The steps of new part assessment are: complete measurements reports of the new parts, material and endurance testing, demonstration of manufacturing process cap-
ability and proof of full assembly capability under full-scale production conditions. In the middle of one hall I saw a notice saying "Test Isle". What does that mean? In every production hall we have special areas where specific tests are conducted. How do you ensure the quality of deliveries to dealers like me? Our products are constantly monitored at every stage of production. The quality of the delivered products is the result of specific quality assurance measures. The success of our products proves that we are on the right track with our quality requirements.