Mr. Eisenberg. Mr. Chairman, may I have this photograph admitted as Commission Exhibit No. 608?
Mr. Dulles. It may be admitted.
(The photograph referred to was marked Commission Exhibit No. 608 and received in evidence.)
Mr. Eisenberg. Using this photograph, Mr. Nicol, could you explain some of the markings which led you to the conclusion that Q-1 or Exhibit 399 had been fired from the same barrel through which K-1 was fired?
Mr. Dulles. Before you do that, just for an amateur, would you explain what this is a photograph of, the inside of the barrel?
Mr. Nicol. No, this is a photograph of two projectiles.
Mr. Dulles. Projectiles?
Mr. Nicol. This is the dividing line of the comparison bridge actually. You see a portion of one, of K-1 on one side and Q-1 on the other.
Mr. Dulles. Yes.
Mr. Eisenberg. Is that groove on the right a cannelure?