Stop in for a cup of coffee

ZMan67S said

As I stood looking at meters the other day at Harbor Freight I wondered which one I should get.
I've never owned one, but feel the more I do things on the cars I need one.
At least my mechanic neighbor wouldn't have to walk back to his house to get his.
Any recommendations....what it should have on it??

Click to expand...

When picking gauges, you want the range that you expect to be in the middle of the gauge/meter sweep... The most accurate readings are in the 1/4 - 3/4 range, the ends are not as accurate... Dr. Kordyban taught us that in our class - always get a gauge that reads in the middle of the range and not at the ends...

Example: If you are measuring 12 volts, you would want the range of the meter/gauge to be 24 to 25 volts max... That way the normal reading will be in middle of the gauge...

From 0 - 1/4 and from 3/4 - full are where it's not as accurate and harder to read... It's easier to read the gauge when it's in middle...

Also when you are getting the triple gauge set for the car, I like 270° of sweep on the oil pressure and temperature gauges... I can put up with 90° sweep on a volt gauge as it doesn't fluctuate much when running...