7l>> 'A L- ?- ~~ ter** S7(, Represented By THE OHIO INSTRUMENT CO. 505 Whltnoy Ava. Worthington, Ohio 43085 T-l. Columbus (614) 885-0743 Dr. Offices 330 Municipal Ct, Bldg, Ann Atb«, Mi«h. Tai. (313) 769-1177