RULE N1029. ACTION ON BOOK ACCOUNT.
In actions in which book accounts may be offered in evidence, if a copy thereof is attached to any pleading, it shall not be necessary to produce the books at the trial, unless a responsive pleading shall allege that the account or copy is incorrect, stating particulars, or that the books are not books of original entry, and shall demand the production of the books at the trial; otherwise, the copy shall be admitted as evidence without further proof.