I don't understand why the manufacturer couldn't smooth out the sharp edges of this tool. Reviewers noted this issue and it is also mentioned in the instructions. The tool works well and is almost inaccurate. First thing I tried on my squares.
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review
π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review
π§ UEi Test Instruments DAFM3B Digital Multimeter
6 Review