Hey guys....was reading the posts on the temp gauge and wanted to ask a question. I'm going to reconnect the Rally gauges in my '68 but am curious about what the different "tick" mark s mean in degrees as I've never seen anything that addresses it If the dial range is from 100 to 250 degrees with 3 tick marks in between, does that mean that each is 37 1/2 degrees, or were they calibrated for the standard 190 degree thermostat to read at some particular place on the gauge (maybe half way)? I'm running a 180 degree thermostat and don't know where is should really indicate.