Applicable engine : 2,3,4,5,6, & 8 cylinder, 4 cycles gasoline engine with a DC 12V Measuring Items & Ranges : cam angle, Engine Revolution, point resistance, Ignition Timing Power Source : DC 12 Battery Dimensions : 484 mm (W) x 266 mm (D) x 289 mm (H) Weight : approx 9.0kgs