I flew an aircraft some time back with no clocks at all. I kept a sheet with four time columns on it; Engine Start / Engine Stop - that went in the log book and Wheels Off / Wheels On - that went in the MR. My trusty Casio did the rest.
It's not an unreasonable question from Krazy, if all he / she has been used to is flying school aircraft with a Hobbs meter working off oil pressure. Beware though of some operators who have them hooked up to the master switch
