... they don't start from zero. The blue numbers on the left edge could be imperial measurements, but don't tie up with the blue grid lines. The grid itself is accurate as the position of the outer tracks will confirm. Am I missing something or do I have to change the number indicators to tie up with the grid? I've searched high and low but can't find anything in the sketchboard controls that would allow choice of imperial or metric or tie up the numbers to the grid. Strange.... Attachment: attach_1254_1711_Box_file.JPG 220 posted: 1 Dec 2011 21:24 from: Brian Nicholls Hi Gordon, I think I see part of your dilemma. On the Sketchboard image the blue dimensions are tru size millimetres, which if you do the sums: 5500 mm/ 25.4= 216.535 ins.= 18.045 ft. Exacrly as shown on the box image. HTH. All the nest, Brian Nicholls. posted: 1 Dec 2011 23:02 from: Gordon S Thanks Brian, but it's very confusing to have so many measurements around the ...