There are some tools that you can buy cheaply. The edge finder just isn't one of them if you want it to work the way it's designed. So spend the extra $10 on imports, your accuracy and repeatability will thank you!
π₯ Advanced Testo Wireless Hot Wire Anemometer Technology
4 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
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π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review