This Tryptch is of the Firth of Forth Road Bridges in Scotland taken from the Rail Bridge. The centre image has all 3 bridges since there is a girder of the Rail Bridge showing in it too. The second Road Bridge opened this year. The bridge joins Edinburgh with the county of Fife. The volume of traffic up and down the East coast of Scotland was so heavy that another Road Bridge was needed.
I struggled with this one. I tried several instructions but got nowhere. I could not fathom them out. I remembered I made a Zone ruler on a course I did and that was an easy way to follow and do.