STM Sensors, Neubiberg, Germany, offers the GLS03BS fork sensor for high-speed quality control applications. Used with the company's V10 analog amplifiers, the sensor creates a homogenous light band capable of detecting thickness with resolution down to 0.1 mm. Suitable for detecting knots, material defects, splicings, and other imperfections during manufacturing of threads, wires, or filaments, the sensors have a 3 mm fork width, a 4 mm measuring window, and can measure objects as small as 100 µm. (In the U.S. 419-973-4460, www.stmsensors.com)