Comark Instruments | P250F | Digital Pocket Thermometer with HACCP Zones Review February 7, 2018 No Comments The P250F Pocketherm Folding Thermometer from Comark Instruments, it’s fast, it folds, it bleeps! Neat, Pocket Digital for quick checks on hot and cold holding and ground beef. Tags: Comark, Home & Kitchen, Kitchen & Dining, Kitchen Utensils & Gadgets, Thermometers & Timers