Can't give many stars as I was disappointed I didn't get the 6 inch ruler and 12 inch ruler as they were supposed to come together in one package. as indicated in the description. The 12" is easy to use and is similar to the one pictured.
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 Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review
Digital multimeter RGK DM-12
6 Review