Reotemp AA Series Sanitary Bimetal Thermometer w/3 in. Aluminum Dial, 2 in. Tri-Clamp Connection - John M. Ellsworth Co. Inc.
Klein Tools 69140 K-Type Thermometer, Pipe Temperature Clamp for HVAC, Measures -4 to +212 Degrees Fahrenheit - - Amazon.com
The Plumber's Choice 2.5 in. Clamp-On Thermometer Gauge, with 30° to 250° F/C Temperature Range TPSBWXIU-2 - The Home Depot
1.5" Tri-Clamp Brew Thermometer | Spike Brewing
Fluke - -20 to 300°F, Pipe Surface Clamp On Thermometer - 73343535 - MSC Industrial Supply
Thermometer Clamp - Walmart.com
1.5" T.C x 3\4" Tee Thermometer Package For Brewing
Model BRCT Clamp-On Thermometer - Blue Ribbon Corp
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