3′ 6″ diam., 10 rectangular spokes, rectangular inner rim, apparent tread 4″.
Hub 15″ face dia., 1½″ out from the tyre.

Casting: 47.2 mm. tread dia., 38.2 mm i/d., Hub 1.9 mm out from the tyre.

Casting prices and stock . CR loco sets, price list

Scan of a casting in a set for a Caledonian 4-2-2 class 123

Suitable for the Gauge 3 Society 2010 minimum tyre width of 6.8 mm, or the earlier standard of 8.0 mm.