Most outlines are 1:20 scale. In Signgo import your outline then select all, right click and properties and adjust scale by entering 20. Always check your sizes by drawing a box along the scale line with the dimension at the bottom of the outline file and the length should read the same.
Please note:
This action will also remove this member from your connections and send a report to the site admin.
Please allow a few minutes for this process to complete.