Available to special order only.
I have now sourced some double sided copperclad in a size suitable, though for 70ft turntables in 7mm scale I am still looking. The Main parts of the Bridge are Copperclad sheet.
Wheels and centre bearings are Ball Bearings for ease of rotation.
Track electrical pickup is from the circle rail and centre axle. This requires polarity reversal but does mean that any sound equipped loco will continue uninterrupted.
7mm scale scratchbuilt GWR 65ft Turntable in WR guise.