'Dime scale' refers to planes like those that were produced in the 30's and 40's and sold for a dime each. They are about 16" WS, very simple construction and made of 1/16" square sticks covered with tissue. Their characteristics include use of very few ribs and formers, rather rough adherence to scale-ness, no vacuum or plunge-formed plastic parts, and no laminated parts like wing tips. Look at the SFA page referenced above. The Bristol will give you an ideal of what 'dime scale' is all about... Note the reference to one wing tip showing laminations which make it illegal for FAC Dime scale. Since this is not a sactioned FAC event, you can laminate to your hearts content.
Or try this (working) link to Dave Lindsey's model plans: http://mywebpage.netscape.com/dmlivesay/index.html
and look at the 'dime scale' collection.
Dave Cowell at DPCModels also makes dime scale reproductions of some old Comet kits in 'short run' configuration (you get the plans and laser cut formers and ribs - you supply the rest) for $7.50 a pop. The Art Chester racer (the 'Jeep'), among the others, is a perfect example of what dime scale is. See: http://www.dpcmodels.homestead.com/SRKS.html
Hope this helps.