EE WAS TAKING VIBRATION READINGS AND BUMPED HIS R ELBOW ON SIGHT GLASS OF THE REDUCER ON 29-10 CU. THE EE ATTACHED AN ACCELEROMETER TO COMPONERS OF THE CONVEYOR HAD TO CRAWL INTO A POSITION WH EN HE BACKED OUT OF THIS POSITION HIT HIS ELBOW WAS EVALUATED BY APHYSICIAN ON 10-18-03 AND TAKEN OFF OF WORK.