What is the difference between the FOGRod and the Multitrode^® “probe”?

Multitrode® stopped production in early 2025. Both units work on exactly the same principle, and the FOGRod costs significantly less than the Multitrode probe did. There are also some other significant differences:
a) Toughness – the FOGRod has been designed to withstand a lot more impact than the Multitrode^® probe. You can see a video of the FOGRod being thrown up into the air and bouncing off concrete without cracking. This is due to a number of factors including better design and better materials.
b) Shielded cable – modern instruments have shielded cable to avoid noise, e.g. from motors, affecting their measurements. The FOGRod has a shielded cable, whereas the Multitrode probe does not.
c) Cable integrity – the FOGRod cable is inherently tougher due to its braided shield, but it also has a failsafe core, which allows the LIT to test for cable breaks and cable short-circuits.