K Type Pipe Clamp Temperature Probe

Amazon

Quick response temperature plates suitable for 4-40mm diameter pipes Spring loaded jaw for secure grip Cable length 1m Compatible with any K-Type thermometer or multimeter Temperature range: -40°C to +100°C / -40°F to 212°F, Manufacturer: Arctic Hayes

Zoro Tools

Used to measure the temperature of radiators and pipes, ideal for checking the flow and return temperature differential when balancing radiators.