What is the right way to measure your skull?

[Zack_Fair]

Which tools should be used(specifically cheap ones) to measure your cephalic index and facial features? And how, lol?

[Dacul]

Well you need some 90 degrees angles which you can obtain if you are using your door and the frame of it.
Put the head with your back on the frame of the door,and use a book with hard covers to form a 90 degrees angle on the door surface,slide it until you reach your forehead.Here how you measure your head length.
You should stay with your head in profile,paralel to the door with the side of your head.
Same method a little adapted works for measuring your head breadth.
You also use some simple tool made from some plastic rulers,but you need to do a little cutting to do a tool exactly as the one used to measure your head used by professionals.
You need 3 rulers for that,one bigger and made from a more tougher plastic and 2 rulers of 30 cm each.
The bigger ruller need to be cut on the middle,with a very straight line,parallel with both sides of the ruler,without cuting in the ruler in 2 pieces.
The cut should not very wide.
So before you do the cut,you use some quality glue to stick the smaller ruler on the biger ruler,and their sides need to form 90 degrees angles.
Something like this:


After you did that you also cut the smaller ruler left,but with a small cut horizontaly and you put in the cut of smaller ruler something like a piece of plastic and you also glue that.
The piece of plastic should be thin enough to enter in the cut of bigger ruler but without moving there,only sliding.
The piece of plastic should be something rectangular in section.
After you got a tool to measure your head length and breadth.

[Mesrine]

External calipers are what you need, but they won't be cheap.