9Yeah I used Google maps for measurements. While not exact its a good indicator.my shed is 250 mm wide and 900 mm long which is a bit short.turn table is about 200 mm. If you use anyrail you can drop a Google image in and layout track plans over it. Iv stalled as iv no clue how to put it into a layout.id be interested to see how you overcome this as I don't have a lot of space.