Mr. Eisenberg. Could you go on, please?
Mr. Cunningham. Yes. On the left you will see the stamping, "SP", which is in the cartridge case itself. And over here next to the hairline you will see the individual characteristic marks. And you will see similar marks continuing on the other side of the hairline.
On the C-15, the revolver side, you will see a dark portion running vertically down through. That is the space that the Congressman was asking about—how it fits the primer. That is the small space at the top where the primer fits into the base of the cartridge. And over here to the right of that dark mark you will see a lighter colored object with more individual characteristic marks, that is actually the primer, the individual characteristic marks on the primer of the test cartridge case.
Mr. Eisenberg. Now, as I understand it, in effect this picture can be viewed as a composite cartridge? That is, the picture on the left begins where the picture on the right ends, in terms of position on the cartridge case?
Mr. Cunningham. In essence; yes.
Mr. Eisenberg. And the point of the picture is to show that when you make this composite, the lines on each case show up as if there were no composite at all, but as if they were simply one case, because they are so close together in microscopic markings?
Mr. Cunningham. Yes; in proximity. And they are brought together.
Representative Boggs. And so similar?
Mr. Cunningham. Yes.
Representative Boggs. What is the magnification again?