Baker 312FC Magnetic Surface Thermometer, 0 to 250°F (-20 to 120°C): Science Lab Bi Metal Thermometers: Amazon.com: Industrial & Scientific
Series STC | Pipe-Mount Bimetal Surface Thermometer measures a pipe surface temperature. Available in 3 different clip sizes. Applications in HVAC and non-intrusive temperature measurement. | Dwyer Instruments
BIOS Professional Magnetic Surface Thermometer DT500 - The Home Depot
Digi-Sense Surface Thermometer, 2.5" Face, 1-Spring Pipe Mount, 0 to 500 ° F from Cole-Parmer
PTC® Magnetic Surface Thermometer 0° to 250°F
Amazon.com: Polder Grill Surface Thermometer Silver: Home & Kitchen