Yes it is possible.....
...learn how sails are measured at http://cruisingdirect.com ... Also, most sailmakers have a database for production type sailboats with the essential dimensions.There are many other factors in sail design than luff, foot and leech, so you need to learn as much as you can by perusing the various sailmaker websites. Most of them have extensive education sections. If you're looking to buy a used sail you can start by finding one similar in size to what you need then have a sailmaker re-cut the sail to fit your boat. Go to Google.com and enter "sailmakers" in the search box to get you started.http://www.google.com/