Meat thermometer

The degree of "doneness" of meat or bread correlates closely with the internal temperature, so that a thermometer reading indicates when it is cooked as desired.

Some show the temperature only; others also have markings to indicate when different kinds of meat are done to a specified degree (e.g., "beef medium rare").

Some use a bimetallic strip which rotates a needle which shows the temperature on a dial; the whole thermometer can be left inside the oven during cooking.

Another variety commonly used on turkey is the pop-up timer, which uses a spring held in by a soft material that "pops up" when the meat reaches a set temperature.

[2] For beef, lamb, or veal insert the meat thermometer away from bone, fat, or cartilage.

[2] Pork needs to reach the same temperature 71 °C (160 °F) as beef, lamb, or veal and the same rules for use of the thermometer apply.

A meat thermometer with a dial. Notice the markings for each type of meat.
A digital food thermometer in pork
A food thermometer in water
A roast turkey with pop-up thermometer (the white plastic object in the breast) in the popped position
A meat thermometer with various cooking temperatures denoted for various meat types