I didn't want to pay a branded price for my trailer so I put magnets on the back and they've lasted hundreds of miles so far. And they're cheap enough to give to your friends.
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review
π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
Digital multimeter RGK DM-12
6 Review
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review