I know they are not as accurate as a floating thermometer...I don't think … Look for one with an LCD display that's easy to read and a start button that's easy to press. But Virtually all digital stick and most ear (tympanic) thermometers are made in China and sold to domestic firms … Digital stick thermometers were used orally; most can also be used to take underarm or rectal temperature. Another type is a probe thermometer , which is designed … These thermometers are quite popular with fresh water aquariums for some reason. Accurate temperature measurements start by purchasing the right brand of thermometer. I use the stick-ons on my fermenters. Stick On Thermometer. Sticker thermometers … I really just use them as a "ball-park" measure to make sure I'm in the right area. They aren’t bad although they aren’t the most accurate of options either. They sometimes can also be a bit difficult to read. A digital stick thermometer is the most widely sold and cheapest type. The more common kind is an instant-read thermometer, which you stick into food for a few seconds to quickly check its doneness.