Yep in PS. Use the measure tool located with: 'eye dropper' and 'sample' tools. Draw the line along a known horizontal or vertical. Click on: Image - Rotate Canvas - Arbitary Thats it, OK it and PS does the rest :)

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html