Curved edge makes straightening and leveling difficult. They stick to the trailer very well, but are useless unless I can mount them straight. Probably an operator error, but a ruler would have been much easier.
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
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π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
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Digital multimeter RGK DM-12
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