Double heading is a term used in railway operations and refers to the practice of using two locomotives to haul a...
Yes, you can use HO figures on your OO scale layout, there is a slight difference in size, but this is negligible in the grand scheme of things. HO gauge is 1/87th that is 3.5mm to the foot, where as OO scale is 1/76th, that is 4mm to the foot....