The small frame is helpful if you want to put it on your desk, and there is a piece of double-sided tape to stick on your monitor, case or anywhere else. Or you can use the tape to attach the thermistor to the surface you want to test. The thermometer is manufactured by Senfu , more known for its water-cooling setups. 0C is when water turns into ice, 100C when it begins to boil. Two common places in the case are the Video Card, where you just tape it to the other side of the chip and the Hard disk, taping it on one side or on the top, wherever you have space.
Some tapes tends to melt at certain temperatures, so watch for that.
Also, if you stick the thermistor between two surfaces make sure that the pressure is not excessive as that could crunch the thermistor and kill the thermometer. I ve tested a few hot spots, like my HDD, the CPU, the video RAM and, since I was there playing with the probe, the Sound Blaster chip while listening to MP3s, and I was somewhat surprised by two results. I took the temps on the back side of the motherboard for the GPU, as the small HSF prevented me from attaching the thermistor to the chip. I ll work on that. The other surprise was the audio chip.