OPINION ON DEFENDANT'S MOTION TO COMPEL JOHN K. WELCH, Judge. The Defendant has filed a Motion to Compel Discovery relating to his arrest for Driving Under the Influence. The Defendant contends that he is entitled to calibration, maintenance and "out of service" records of any scientific instrument relied upon by any State's witness as a basis for, or in connection with, his testimony, including any Intoxilyzer. A hearing was held on Defendant's Motion to Compel in the Court of Common Pleas,...