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.
Nobody ever went broke underestimating the intelligence of the American public.
I have been using one of these tripods for years. Initially with a Bogen 3047 head (mounted on my David White surveyors tripod by using a cross plate and 3/8 inch bolt). I have most recently mounted a Majestic geared head by having an adaptor machined (cost $20.00). The reason for the move to the Majestic head was my move into 12X20. The 3047 Bogen is not up to the task but the Majestic head is. The tripod handles 12X20 with no problem whatsoever. I figure my tripod in a comparable Reis would have set me back nearly $1,000 but doing it this way I have something less then $300.00 invested. (bought the surveyors tripod new).
Art is a step from what is obvious and well-known toward what is arcane and concealed.