Testo 10n magnetic probe for measurements on metal surfaces testo 0602 4892 p this temperature probe from testo can be used with a type k thermocouple tc sensor to carry out measurements of surface temperatures of up to 400 deg c p p thanks to the magnet the probe adheres to metal surfaces all by itself the magnet s adhesive force is 10n and the probe features a 1 6m cable it is suitable for use with any testo product with a type k sensor input p testo 0602 4892 magnetic temperatur