Longacre racing compact and leighweight 0-10,000 RPM tachometer records the RPM 10 times per second fo up to 1 hour. These recording can be split into multiple sessions allowing subsequent play back. The kit comes with a switch which can be remotely mounted allowing the driver to start and stop the recording as they see fit. The longacre tacho also has versatile shift light which lights up steady when on the lower setting and then flashes when on the higher setting. 6 LED's mounted on the side of the tacho can either be used as shift lights or set lower to give a indication for a pit lane speed. The tacho can be configured to be used with most ignition systems and from anything from 1 to 12 cylinders