I'm a high school art teacher and I'm having a hard time finding rulers that last more than a semester. This is the best option if you want something affordable and durable. They don't break, they don't get damaged (haha) and they've lasted me twice as long as other lines I've tried with my kids. It is great!
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₯ Advanced Testo Wireless Hot Wire Anemometer Technology
4 Review
π§ UEi Test Instruments DAFM3B Digital Multimeter
6 Review