If you're going to be using these for your cameras, you'll need a way to convert the 5/8" - 11 threads to 1/4" or 3/8" (or whatever your camera has).

I haven't seen a practical, off the shelf way of doing this (but if someone has, please let us know).

The photos of the tripods there are pretty poor, but I've used plenty of these type of tripods in the past for surveying, and they are generally solid. Tripods for lasers and levels are usually high quality (ones for theodolites and total stations usually more so), though the page doesn't mention the brand/maker.