Temperature Gauge Calibration

["Christopher M. Delling" <cdelling@ic.net>]

I want to calibrate the temperature gauge on my 77B.  This is an
electric gage.  I have a precise method of measuring the coolant
temperature as it exits from the thermostat housing.  Anyone know how to
adjust the gauge?  Currently, with a 180° thermostat, my gauge reads
over 3/4th's of the way to "H" on the gauge.  I know it shouldn't bug
me, but it does.

Regards,

Chris Delling