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>
When I was 13 I did a similar experiment, and what I did was make a pair of manifolds of copper with copper pipes soldered between the manifolds. Effectively a shunt. Then I put a hall clamp on it and used a scope to measure the pulse, and integrated the area under the curve.

I am sure there are lots of better ways to do it, but to a 13 yo with a scope and household tools, this worked. Perhaps you could use two copper bus bar and create welding wire shunts between them.

Running to the scrap metal place and electronics junk surplus store in the city always got lots of interesting stuff, and for the most part, they just gave it to me.