The PDQ400 Waterproof Pocket Digital Thermometer is slim and has a thin probe tip for fast response. The 1.5mm probe is ideal when chefs check the temperature of thin foods like burgers. Waterproofing is ideal for steamy kitchens and can also be used to check commercial dishwasher cycles. The maximum temperature hold feature of the PDQ400 allows it record the maximum temperature in a rinse cycle of a commercial dishwasher. There is also a handy data hold feature on this Pocket Digital Thermometer which enables the user to temporarily hold the digital reading on the screen while they note a measurement.