... scale and rotated as required on the sketchboard, so there is no need to make a fixed scale. All that is need is a note somewhere of the design size. The best place for this is probably in the file name where it can't get lost, perhaps water_tank_20x20ft.gif or some such. Here I have added your tank to a track plan. I stretched it to 30ft x 20ft (setting 120mm x 80mm on the sketchboard for 4mm scale) and rotated it to suit the tracks. This is the workpad view: 2_151253_370000000.png Which I think is brilliant. Many thanks Brian for taking the trouble to do this. If we could have a library of GIFs of this calibre available to sketchboard* users, I'm sure we could see some really attractive track plans being produced. (* The option to include multiple pages in a single file was making things far too complex. I have decided to limit the program to one page per .sk9 file, so I have therefore renamed the sketchbook function as sketchboard.) regards, Martin. posted: 15 ...