We are offering tachometers.Features* non contact measurement* high intensity laser beam not affected by shop light* simple operation, just aim at reflective mark to get rpm* memory function saves maximum and minimum rpm readings* easy and accurate measurement of rpm on coil-on-plug anddiesel engines, where conventional inductive tachometerscannot be used. Can also be used on generators, compressors, industrial engines, fans, gears, etc.