The Ikea Domsjo Apron Sink.  This is the most affordable apron (farmers) double bowl sink I could find for my kitchen remodel.  Needed exact dimensions for creating a custom cabinet around it.  Critical dimensions are accurate in regard to placement in a cabinet.  Other items like the strainer holes, edges of the sink, and slotted drains along back could use some polishing, but seem to get the idea across.