Rotation speed measuring device via light andrefl ecting label or measuring tipApplication:The handheld tachometer rotaro 3 is useful at the installationand setup of plants and machinery as well as for serviceapplication, monitoring production processes or use atdevelopment laboratory. The rotaro 3 can measure rotaryspeed of for example motors, turbines, pumps as well asstirring devices, centrifuges and haulage installations, foilor textile manufacturing units, coil and transformer windingmachines, machine tools, etc. Furthermore it can measurerunning speed and length of foils and band of all kind.