Need Advice on Aftermarket Gauges

Learn from my mistakes and use high quality gauges as recommended above! I used Equus gauges and had nothing but trouble with the temp and oil pressure gauges. Both poorly calibrated. Equus oil pressure gauge showed 0 psi at hot idle, Autometer shows 15 psi. Equus showed 220 deg. With the AC on cruising town, Autometer never gets above 180 deg.

Autometer temp and pressure verified with good test equipment.

Cley