Hain Company model HC 1220 measuring device. Moves from 1 foot to 20 feet length in seconds, fits any chop or pull saw. Twenty foot long system, accurate within .010 of an inch. Aluminum extrusion stop rail and stop blocks, 1/4 HP linear actuator, steel stops with polished steel internal parts. Can be built either right or left hand feed. Roller conveyors, longer or custom length measuring devices and manual version of the MEA are also available at an additional charge. 110v, 1 phase electrical.