Dwyer manufactures 12 types of dial thermometers; several digital solar-powered, bimetal thermometers; nine types of infrared thermometers; and four spirit-filled thermometers. The company's line of dial thermometers includes: bimetal thermometers; sanitary bimetal thermometers; side-reading bimetal thermometers; long reach bimetal thermometers; maximum/minimum bimetal thermometers; pipe-mount, bimetal surface thermometers; panel-mount, bimetal stem thermometers; clip-on bimetal thermometers; glow-in-the-dark bimetal thermometers; hot water thermometers; surface mount thermometers; and pipe-mount, bimetal surface thermometers.

Palmer Wahl develops and manufactures bimetal thermometers, diary thermometers, dial thermometers, digital thermometers, industrial thermometers, infrared thermometers, laboratory thermometers, and sanitary thermometers. The company also produces thermowells, heat probers, callibrators, chart recorders, temperature labels and thermal imagaing cameras.