Great for getting an idea of engine revs on an old bike
I fitted the tacho to get an indication of the engine revolutions on a Royal Enfield Bullet 570 because the bike does have one fitted when new. The engine will rev till it goes pop at 8 ish thousand rpm so knowing its limits is important.
This little box is great for tuning your moped. Cable length great for a permanent rev counter and for tuning. Quick wrap round the spark plug cable, secure it with electrical tape and works straight a way.