Just thought I would post a Spreadsheet to do Conversions for various gauges http://mywebpages.comcast.net/ngauger/gauges95a.xls Thanks to MCL - for the help!! LOL Just click on the number "24" Under "input" and put in the dimension in inches (or Tenths) that you actually measured on your layout. Then hit "Enter" The output (under the scale of your choice) will display Ft & Inches. What it would be on the prototype. It was created with MS Office 2000 - you might need it to make the spreadsheet work. Let me know if it works "off the net" without MS O2002 If you think I should do it opposit - You enter the prototype measurment - and it shows you scale - let me know & I'll do it. Thanks!!