Engineers at Schneeberger Inc., Bedford, Mass. (, have designed their linear-motion module and come up with a smaller version with high stiffness and accuracy. Its height (22 mm) is less than any similar device on the market. To keep the device compact, it uses a tooth-belt drive. The rail and carriage, which form the main structure, are made of corrosion-resistant stainless steel with no aluminum parts between the structure and rail. Maximum speed is about 5 m/sec, and repeatability in the lab has been shown to be better than ±0.03 mm. The device is available in sizes 9, 15, and 42, and all installation and connection dimensions meet DIN standards.