Looks like you’ve got yourself a homemade front end alignment tool. You’ll want to lock the steering column so you can take measurements (or get someone to help). Take a tape measure and measure from one side to the other. Front edge to back edge should be about equal (toe in/out). Top edge to bottom edge could be equal (for dead neutral camber) or perhaps not if you need to adjust for various handling issues.
One thing to keep in mind is that the chassis will flex when you get in it (with wheels on) and will invalidate your careful measurements.