Up for sale is WISECO WISECO HOUR/TACH ADJUSTABLE METER. The vendor part number is W8061. Read title carefully to know what you are getting. Catalog description�. Adjustable input and re-settable max rpm Works on all gasoline engines No battery or ground wire required Easy installation 100% epoxy encapsulated cases are water resistant Record and display in increments of .01 hours up to 9.999.9 hours Hourglass symbols appear and flash on/off to indicate counting time Automatic roll-over Includes log book rack your service and settings