Remote temperature and/or temperature difference measuring device

A device for measuring temperature and/or a temperature difference comprising:

• a housing;
• a measuring circuit supported by said housing, said measuring circuit including
• a heat flux sensor with output,
• a memory circuit in communication with the output of said heat flux sensor,
• an input unit adapted to activate said memory circuit so as to memorize an output signal from the output of said heat flux sensor as a reference signal,
• a comparator having a first input connected to said memory circuit and a second input connected to the output of said heat flux sensor, and said comparator having an output for delivering a signal corresponding to any difference between the reference signal and a subsequent output signal of said heat flux sensor, and
• a signaling means connected with the output of said comparator for providing a signal designating any difference between the reference signal and the subsequent output signal of said heat flux sensor;
• and
• a marking assembly supported by said housing, said marking assembly including a first light emitter supported on a first support, which first support is adjustably secured to said housing, a second light emitter supported on a second support, which second support is adjustably secured to said housing and in engagement with said first support so as to coordinate movement of said first and second light emitter, and an immobilizer member for fixing in place said first and second light emitters such that light beams produced by said emitters converge at a location removed from said housing.