That's centimeters...LOL...a killy meter would be a very long ruler....lol...acually being a canadian myself I mix imperial and metric in model railroading, all my benchwork and grades are done with the imperial system, all my buildings and scratchbuilding I do in metric. 1:32 scale is acually bigger then O scale, where 3/8" equals 1 foot. 1/32" to the foot would acually be half as small as N scale, 1:320th is smaller then Z. When it comes to models like this Catt, 1:32 and 1:35 have very little difference and come in a variety of military vehicles and airplanes and some imported kits are also 1:35th. So to answer your question 3/8" = 1 foot and it works out to 1:32, twice the size of S scale