Ian,
I made them, and pretty happy with them too. Those and a 5/64" drill bit, to the right of pots, has eliminated the constant drip. I can twist the head of the meter rod and adjust lift height, for volume, with the screw on the top. I like casting with two pots, and returning sprue to pot. I start with two full pots and if temp drops from adding too many sprue I just go to the other pot for a couple pours, but stay primarily with one pot.
The table is an old cast iron machine stand my FIL came up with somewhere in Il. He literally, on his death bed, told my MIL to make sure I got it when he died. He used it as a rolling work bench in his garage for many years, and I always tried to talk him out of it, thinking I'd use it as a welding stand. I made my own welding table several years before his death, so thought it would work well for a casting stand, and it does. I just open the garage door and cast away. Took a couple hours of grinding and wire brushing to get the paint and machine oil off the top, but painted up real well. The weight on the bottom shelf makes it quite stable. Soft lead on right, WW in center, and pewter, solder on left. Pots sit on a wood platform to get it the correct height when I'm sitting on my swiveling shop stool. I have overhead fans to my back or right when I need them. Preheat moulds on hotplate on my welding bench. My dog kennels are at a left angle to the door so they can see me and I them. All woods to the south with rising hillside, so I can also watch the local squirrels and laugh at Cash's reaction to them. A perfect day if I shut my phone off! LOL