Question: What is the standard way to measure a current of about 10,000 A? DC clamp meters seem to have only scales up to 2,000 A.

**Edit**

Some background of this question: 

I am a high school physics teacher and I am trying to improve some classical experiments using high currents from ultra-capacitor discharge. 

In particular I am looking for a good way to measure the discharge current of a ultra capacitor for very short times like in this "jumping ring" experiment:

[A safe and effective modification of Thomson’s jumping ring experiment](http://www.rose-hulman.edu/~moloney/Ph425/0143-0807_33_6_1625JumpingRing.pdf)

The second motivation for this question was just because I just want to know it out of curiosity for my background knowledge of what is the usual way to measure such high currents today.

Answer: 
Regarding the general part of the question of how to measure extremly large currents, there are also devices called FOCS which use the faraday effect to determine the magnetic field of the wire and then calculate the current. For example [ABB](http://new.abb.com/power-electronics/focs) sells such devices for measuring up to 500 kA DC. See also: <http://www.ee.co.za/wp-content/uploads/legacy/ABB%20Innovation%20in%20high%20DC.pdf>
My suggestion would be to either measure the displacement of the ring/the force, and work back to the current. 

Or you could just build one beauty of an electromagnet...and measure it's field from the other side of your classroom...