I made an error on the dimension of the Cramer 620h hour meter I am looking for.  The hole measures 1.5” in diameter (not 2.5”) and the face of the meter is 1.7” square with 4 mounting holes.  The body of the meter is rectangular.  I have two identical URC-32b units and the other one has the Cramer 620h hour meter.

The 620h records hours and tenths.  I really do not care about the tenths as long as another model fits.

Chuck

K1TLI