A toggle switch is one of the most basic switches used on model railways, but it's also one of the most useful!A...
OO9 is 4mm to the foot scale (that is OO or 1/76) but using 9mm track gauge (the same size as N gauge). This is narrow gauge modelling and is meant to represent 2ft gauge in real life. The name comes from OO scale and 9mm track. It is a very...