TireMinder High Precision Digital Truck and RV Gauge with Replaceable AAA Batteries and 5 Year Warranty
Try this, available on Amazon, very accurate with two heads to fit just about anything! Has a built in light for nighttime, uses AAA batteries that you can get anywhere! Best gauge I've owned in a long time!
2017 Thor Windsport 29M
Dave & Myra FMCA 101070S