
Definitely not square. But that can be fixed with a thin file. The ruler itself is solid stainless steel, I just wish the base was also stainless steel, unfortunately it's aluminum so won't hold the square for long even after you've attached it. Again, for $10 what do you expect?

π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 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₯ Advanced Testo Wireless Hot Wire Anemometer Technology
4 Review