Located at TTI Inc.'s headquarters in Williston, Vermont, the sensor division manufactures thermocouples and RTDs to customer specifications. A wide range of accessories also is available. A new, streamlined on-line ordering system makes simplifies the ordering process, providing customers with access to timely estimates and orders from their computer terminals. Thermocouples with noble metal junction may be rated as high as 3100¯F (1700¯C), and precision RTDs can be manufactured with a stability of 0.0025¯C peer year with most industrial models drifting less than 0.1¯C per year.