This example shows a tyre width of 3.5 mm for Gauge 0 Fine.
For other standards remove more or less metal from the back of the wheel to give your chosen tyre width.
1100 mm (3′ 7.3″) diam., 10 oval spokes, rectangular inner rim. Apparent tread 3½″.
Hub 12″ face dia., 2″ above the tyre.
Sources: Works drawing.
Casting: 24.4 mm tread dia., 20.6 mm i/d,
hub 6.8 mm dia, 1.1 mm out from the tyre.
Casting prices and stock . Netherlands, loco sets, price list
Scan of a casting in a set for a Netherlands NS 7100 class 2-4-2T
8 Sept 2017