The Testo 0600 9787 is a flexible combustion air temperature probe. The 0600 9787 measures temperatures from 0 to 100 °C (32 to 212 °F). The measuring probe has a length of 7.48 in (190 mm) and a diameter of 0.157 in (4 mm). The cable has a length of 7.2 ft (2.2 m).