TPK-03 Immersion ProbeType K Thermocouple Probes☆ -50℃ ~ 800℃/-58℉ ~1472℉ General purpose needletype with stainless round head.☆ For measuring liquid or gelTPK-03S Short Type Immersion ProbeImmersion Probe TPK-03S-50℃ ~ 800℃/-58℉ ~1472℉General purpose needle type with stainless point head.measuring internal temperatures of liquids, semi-solids such as oils, rubbers, plastics, power, clays, meats, fruits, frozen foodstuffs.