Spectrograph: Listen & Download Spectrograph .mp3 Error! Change your browser, please! ⇓ Download Mill for grinding grain, Brewing unit ⚠ Vibrosieve at the factory ⚠ Milling machine ⚠ Dry cleaning ⚠ Letter press ⚠ Power station turbine ⚠ Electric welding ⚠ Lowers forks, Forklift raises ⚠ Hydraulic pump ⚠ Low frequency running engine ⚠ Electric generator (hum) ⚠ Hydraulic down machine ⚠ ★★★★★