Bel-Art Polypropylene Clip for 3.2 to 11mm Thermometers (Pack of 3) (F18241-0000) This handy polypropylene holder clips onto the edge of a beaker or other container and holds a thermometer vertically near the side of the vessel for a secure and simple reading The thermometer is held in place by small "fingers" that will expand to accommodate thermometers ranging from 3.2mm to 11mm (1/8" to 7/16") in diameter Reduce thermometer breakage with Scienceware thermometer holders Autoclavable at 121 degreeC (250 degreeF)