Sec. 1.357  Mechanical reproductions as evidence.

    Unless offered for the sole purpose of attempting to prove or 
demonstrate sound effect, mechanical or physical reproductions of sound 
waves shall not be admitted in evidence. Any party desiring to offer any 
matter alleged to be contained therein or thereupon shall have such 
matter typewritten on paper of the size prescribed by Sec. 1.49, and the 
same shall be identified and offered in

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duplicate in the same manner as other exhibits.