Max difference between the 2 primary altimeters?

[Flight Detent]

Hi all,
For the B737NG, the limits are:

Grnd: Capt to FO/50 feet - field elev at or below 5,000 feet

Capt to FO/60 feet - field elev 5,001 to 10,000 feet

Either one to field elevation - max 75 feet (all elevations)

Flight: M.78 at or above FL350 - elec to elec max is 100 feet.

From the Boeing production flight test procedures.

Cheers, FD