IME, VDO gauges are among the worst. They were supplied with the Lugger, so I'm stuck with them until they die, after which I will replace them with Stewart-Warner. The wheelhouse tach reads 50 RPM lower than the ER tach at 1800. Hopefully, the pyrometer is accurate. Regards, John "Seahorse" Brent Hodges writes: I have a 1988 Albin with these same tach / hour meters. Mine are VDO brand. That is hours, tenths, hundredths. Mine all worked 4 years ago when I bought the boat, now 3 out of the 4 have quit. Damnit.