Felt like I was buying it "invisible" since there were no reviews. I wanted a square measured from zero at the inside edge and zeroed from the base to measure vertically. I would think that would be a good idea and assume there will be no problems. However, the only squares I could find on Revain that were measured this way were really (!) expensive. So I ordered this hoping for the best and was not disappointed. It's solid and, as far as I can tell, perfectly square.
🔍 Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
Digital multimeter RGK DM-12
6 Review
🌬️ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review
🌡️ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review