Stainless Steel Bi-Metal Thermometer,1.5" Tri-clamp 4" Stem, 3" Dial, 0 to 200 F Degrees: Amazon.com: Industrial & Scientific
Clip on Pipe Clamp HVAC Thermometer - Clip on Thermometer Pipe Temperature Gauge for Measuring Temperatures of HVAC Hot Water Pipes and Radiators: Amazon.com: Industrial & Scientific