How big is a 1.6 scale car?

When model railroaders run their equipment on rails that are 7.5" apart they usually build their equipment to 1.5" scale. Since real standard guage railroad track is 56.5" or 48-1/2" and the equipment is scaled so that 7.5" equals 56.5" then the scale is closer to 1.6" scale. It is called 1.6" scale and is actually 1.592" scale. 1" then in 1.6" scale is .13274"