right to evidence

The right to evidence to be obtained from an existing object does not depend upon having an interest in it, or, in a case like this, upon having an interest in the original cause, or upon the object being admissible or inadmissible in the cause for which it was prepared, or upon the right or want of right of the public to examine the thing. The necessities of litigation and the requirements of justice found a new right of a wholly different kind. So long as the object physically exists, anyone needing it as evidence at a trial has a right to call for it, unless some exception is shown to the general rule.