194 S.E.2d 758 WILLIAM WILSON HOWELL v. COMMONWEALTH OF VIRGINIA. 42843 Record No. 8064.Supreme Court of Virginia. March 5, 1973 Present, All the Justices. Automobiles — Speed — Radar Check — Speedometer Accuracy. Officers’ certification that speedometer of vehicle used to test accuracy of radar device had been calibrated and found accurate was adequate. Certificate […]