From: utzoo!decvax!harpo!ihnp4!ixn5c!inuxc!pur-ee!uiucdcs!swanson Newsgroups: net.railroad Title: Re: HO scale query - (nf) Article-I.D.: uiucdcs.1178 Posted: Sun Dec 5 15:28:43 1982 Received: Mon Dec 6 07:04:51 1982 #R:burl:-12700:uiucdcs:20600001:000:490 uiucdcs!swanson Dec 5 12:36:00 1982 For HO scale the scale data is: Proportion to prototype : 1/87.1 Scale to prototype feet, in decimals of an inch : 0.138 Scale to prototype feet, in fractions of an inch : 1/7.3 Distance between rails, in inches : .65 This information is from "The Complete Book of Model Railroading" by David Sutton, (Castle Books:New York). It is a bit old (1964) and a little outdated, but still an excellent starter book. Robert Swanson Thiensville Railroad