Protimeter Original Style Humidity Sleeves 43 x 16mm (20 Pack) Base UOM:20PACK What will I need to Safe on colourfast carpets What will I need to replace 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 sleeve exists to isolate a pocket of air from the room so it can equilibrate with the material around it For sleeves requiring a 12 mm hole