I bought one of these thinking it was normal Swanson quality. It's not like this. I couldn't even measure a corner without it breaking. Also, it didn't work right in front of my company owner, making me look like an idiot. Super disappointed. Sent it back for a full refund and bought it for $6 at a local True Value store, which works like a charm.
π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
Digital multimeter RGK DM-12
6 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