The company now offers its ac-powered LVDT linear position sensors in different material housings to handle varying operating environments. Standard configurations are constructed of stainless steel with hermetically sealed electronics that enable reliable performance in temperatures up to 400°F or under mild radiation exposure. Other optional housings include Inconel 718, Monel 400, Titanium, and hastelloy. MACRO SENSORS, Pennsauken, NJ. (856) 662-8000.