
After my old engineering square got so rusty I didn't really trust it, I found this one. I think it will serve me for a very long time. Really long time ago!

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§ UEi Test Instruments DAFM3B Digital Multimeter
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π₯ Advanced Testo Wireless Hot Wire Anemometer Technology
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π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
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