Review on Accurate Monitoring with AUTO METER 2391 Autogage Electric Mini Oil/Volt/Water Gauge by Michael Powell

They are small, caliber 1 1/2 inches, I usually stick with 2 inches with full coverage but I needed something that would fit in a limited space and they worked well. They are a bit difficult to read at night. These are electrical sensors not mechanical, I've had no luck with cheap mechanical sensors that failed after a few months, I was hoping these would be better. I've been using them for about a year, the voltmeter and oil pressure gauge work fine, but the temp gauge starts to drop randomly as I drive, I press the dash and it goes back to the actual temp. . That's why I keep spending more and more money on a higher quality sensor.