3′ 2″ diam. 6 round wooden blocks held between the hub and the rim.
Hub 18¼″ diam, 1½″ out from the tyre.

Source: early drawing

Casting: 42.7 mm tread dia., 37.1 mm i/d., hub 1.5 mm out from the tyre.
5″ tyre width at this scale = 5.6 mm.

Gauge 3 loco and wagon set prices . Casting prices and stock

Bare weight c. 100 gr. each, 400 gr./set of four.

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