Howden compressor, screw type #MK4C/WLVB-255/22026/215. "Forced flow type compressor", last used in nitrogen reliquefication plant for super conducting magnet, 250 ton per day, 52 GPM, contract JH1355, complete with Westinghouse 350 HP, 3562 RPM, 3 phase, 60 cycle, 4160Volt, frame #5009-h induction motor, manufactured by Howden Compressors Ltd., Glasco, Scotland. Also starters, lube system and controls.