Charlie, I started out just playin' around, and I ended up with a large HOn3, or a small HO, depending how you look at it. In HO, it's 9 ft. wide, 22 ft. long. I didn't measure the height, but it's almost as tall as an HO boxcar (I didn't mean for the cap tp be so tall, I thought I would remove more material to get it to fit, and I didn't plan on an above flush lid). Not well planned, but a good learning exp.
Rich, I think you get a half a shot in 1:1 or 1500 gallons in HO
Now can you guess what materials are used where?
plastic - brass - aluminium - stainless - wood (duh)