re: #661 Ward Cleaver

4-block is the square in the middle of the room , where you start. This HAS to be as accurate as possible, the entire layout is predicated off that. You simply measure the length of the room, determine the middle, mark it, and then measure the width. I do double measurements, scribe/mark a line one foot or more and align the tiles with those marks. Do that accurately, and the job will turn out fine. Incidwentally, you can disregard any jogs, just do the longest and widest parts for your measuring.

Did I confuse you sufficiently?