[Tinker51]

If I am just trying to get it in the ball park (a degree or two) then I do the rotate the engine witha finger over the open #1 spark plug hole until I fell air from the compression stroke. Once It is coming up on the compression stroke I take a small screwdriver and put it down the hole (make sure the screw driver handle is bigger than the hole) and watch. Turning the engine slowly (breaker bar, bump start switch, pushing the car in gear, however you want) just watch until the screw driver stops rising and starts falling then fine tune the rotation so the screw driver/piston are at the top of the stroke.