What do you consider "late model Bonanza"? Every one I've looked at (from
1987 onward until they stopped making them in 1994 has one (at least in the
F33A model).

How about a 2003 model A36? I service a 1998 A36 and it has no recording tach
only a hobbs meter. All the engine instruments have been reduced to about 1.5"
diameter dials, no room for a tach counter.

John Dupre'