DESIGN TECHNOLOGIES DESIGN TECHNOLOGIES TINY-TACH TT226R-1C $54.95 2 and 4 stroke twins TT226R-2X $54.95 2 and 4 stroke triples Simple hour meter with tachomter. RPM to 9,990. Option available to reset the hour meter. Different models for different engine types. Updates every 2 seconds. Standard wire length is 6 feet. Estimated battery life is 5+ years — not replaceable. DESIGN TECHNOLOGIES COMMERCIAL TINY-TACH CTT-A $99.95 Tachometer and hour meter for gas engines. RPM to 19,990. Updates every 1/2 second. Standard wire length is 8 feet. Requires vehicle power or external 9 volt battery. Contains tachometer, hour meter, two service timers, job timer and max RPM. All menu controlled. Can be programmed for different engines. Estimated battery life is 5+ years — not replaceable.