This example shows a tyre width of 3.5 mm for Gauge 0 Fine.
	For Scale7 remove more metal from the back of the wheel to give a tyre thickness of 3.2 mm instead of 3.5 mm.	
	
			
		3′ 8″ diam.,  10 oval spokes, apparent tread 4¾″, tyre thickness 5⅜″.  
		Hub, 12½″ face dia., ¾″ out from the tyre.
		Sources: No 4472 measured direct at Llangollen in Feb. 1995.
		O.S. Noch, British Locomotives of the 20th Century, vol 1: page 218. Detailed works drawing.
Casting: 25.7 mm tread dia., 20.1 mm i/d., hub 0.4 mm out from the tyre.
Casting prices and stock . LNER loco sets, price list.
		
		Scan of a casting in sets for an LNER 
		Thompson A2/1, 6 wheel tender
		Thompson A2/1, 8 wheel tender . 
		P2 . 
		 V2.	
 
	
	27 Mar 2013