Speaking of measuring. For you true alignment guys. where is the appropriate place to measure toe?
For accuracy? The problem is you need a level measurement at the center of your wheels on the front and rear. Your oil pan and things like your drag link will get in the way. You can rig up a device easily using a hollow piece of small electrical conduit pipe or 1/2" PVC pipe with a bolt set into one end of it to allow accurate measurement of the front but you won't be able to get a 180 degree measurement front to back at the middle of the wheel and that's what you must have to be accurate.
The best way is to use the device which attaches to your wheel rim and uses a laser beam to project in front of you. Measuring from wheel to frame for the rear measurement doesn't work. Theoretically it will but if you're shooting for accuracy it won't get you there. You'll be dependent on too many variables.
Long years ago a friend built a device out of plywood that you drove onto and then manually pushed your car/truck until you centered both sides of the device with the center of the hub spindle...wheels pointing straight ahead. You used this to measure the distance to the outside of your wheels and it worked pretty well...for him, anyhow. He seemed to be the only one who could use it properly but it did work and was accurate. I remember he worked hard to make everything square and he braced it so it couldn't change.
