The Protimeter BLD4650-100 Adjustable Sleeves can be used to measure the relative humidity and temperature in concrete slabs, wall cavities, or any confined space. They are designed to be used with Protimeter humidity probes, such as the Mini-Hygrostick.
The sleeves are adjustable from 4 to 6 inches in length and can be inserted into holes drilled into the concrete. The sleeves create a sealed environment for the probes to reach equilibrium with the surrounding air, and provide accurate readings of the moisture conditions.
Available in packs of 100.