Temperature instruments use contact or noncontact methods to measure temperature.

Temperature sensors are measurement devices that infer temperature by sensing some physical characteristic (i.

Weather instruments are designed to measure one or multiple components of weather including wind speed and direction, rain or snow fall, solar radiation, temperature, pressure and humidity

Dial thermometers are bimetal or bi-metallic, liquid or gas-filled, and vapor-tension-based.

Thermal cutoffs and thermal protectors are nonresetting, thermally sensitive devices designed to protect domestic electrical appliances and industrial equipment from fire.

Thermostats and thermal switches are electro-mechanical on/off switches that are activated by temperature changes.

Noncontact infrared temperature sensors absorb ambient infrared (IR) radiation given off by a heated surface.