
My husband is a new teacher and found out at the last minute that he needed to buy protractors for his class. At a local store, they cost at least $1 each. We needed 40 pieces. They were lifeguards! They are durable and the fact that they are available in bulk is amazing!

π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review

Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 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 Dioxide Controller for Digital Gas Monitoring
5 Review