What was found
CLT FLT448 ON TAKEOFF ROLL, WITH FIRST OFFICER FLYING, THE FIRST OFFICER LOST AIRSPEED INDICATOR, ALTIMETER AND VERTICAL SPEED. AFTER TRANSFER OF CONTROLS TO CAPTAIN, THE FLIGHT RETURNED TO FIELD AT CLT. FLIGHT LANDED WITHOUT INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE REMOVED AND REPLACED THE NR 2 DIGITAL AIR DATA COMPUTER. FUNCTIONAL CHECK GOOD.