Sounds like the kind of thing that keeps engineers up at night. I’ve dug through a few of those old canal schematics before—think Roman aqueduct gates or the Persian qanats. They’re all about simple mechanics and gravity, but the trick is getting the flow right without modern valves. If you can get a clear reading of the inscription, it might give you the exact geometry or the materials used. Just keep your tools handy and your patience. If you run into a mess, I’ll point you to the right part of the draft.

Alright, bring that magnifier and a clean slate. Keep an eye on any repeating motifs—ancient engineers liked to use a simple loop for a gate arm and a dot to indicate the pivot point. If the draft shows a set of parallel lines that don’t quite line up, that’s probably where the stone blocks were misaligned, maybe a sign of construction error. Just make sure the draft points you to the right segment before you start sketching. No rush, just get it clean and clear.