This is a simple magnetic holder for a Testo 104 IR food thermometer (or any thermometer of equivalent size)
You print it standing up on the bottom.
I printed it in PLA, no supports needed.
Made for 3 circular neodymium magnets, 10x2mm.
I did have to dab the backside of my magnets in some liquid rubber to make the holder stay put on a slippery painted metal surface, otherwise the weight of the thermometer will drag the holder down. I guess small rubber furniture feet or similar should work aswell.
The author hasn't provided the model origin yet.