This is one of those tools that needs to be accurate to do its job and it doesn't even come close. The main 90 degree angle is off and one edge is not flat as you can see in the photo. The workmanship is of poor quality and uneven. Anyone who gives these 5 stars must have gotten a better one than me.
🔍 Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
🔍 Dioxide Controller for Digital Gas Monitoring
5 Review
🌬️ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review
🔧 UEi Test Instruments DAFM3B Digital Multimeter
6 Review