Spectrograph: Listen & Download Spectrograph .mp3 Error! Change your browser, please! ⇓ Download Shutdown, start, Compressor, run ⚠ Book press ⚠ Mechanical lift ⚠ Power Plant Water Pumps ⚠ Grind metal on a grinding machine in a ⚠ Breakdown press ⚠ Milling machine ⚠ Power station turbine ⚠ Printing press ⚠ Stamping press ⚠ Hydraulic machine up ⚠ Robotic assembly line ⚠ ★★★★★