Protimeter Original Style Humidity Sleeves 43 x 16mm (20 Pack) Base UOM:20PACK Which grill is this Measure the old bag Which grill is this Included Basic (BLD9800) Standard (BLD9800 C) Survey in Case (BLD9800 C S) Restoration (BLD9800 C R) MMS3 instrument Yes Yes Yes Yes Quickstick ST humidity sensor Yes Yes Yes Yes Heavy duty moisture probe Yes Yes Yes Yes Hygrostick with extension lead — — Yes — 127 mm deep wall probes — — Yes Yes Heavy duty hammer electrode — — — Yes Plug in surface temperature sensor — — Yes — Quick start guide Yes Yes Yes Yes Case Soft touch pouch Hard plastic case Hard plastic case Hard plastic case MMS3 Basic Kit — instrument the 3 4 inch masonry bit or the air inside it equilibrates with the room instead of the slab and the test is meaningless