51 X 33 X 45."" Dental Unit. "Dr. Alfred's Hydraulic Motor consisting of metal with fabric covered hoses was developed by W. D. Alford. a Dillon. South Carolina dentist. who thought a water driven drill motor would be very useful when electricity was not available in rural areas. The free standing unit uses a water-powered turbine which is operated by a foot control. It is connected to a S.S. White dental chair with a bracket. table. cuspidor and saliva ejector. Dr. Edward Welsh. a professor at the College of Dental Medicine and a consultant for the Macaulay Museum of Dental History has published an article concerning this instrument with illustrations. The article was published in the Journal of the Student Dental Association. Vol. 4. December 1987. pgs. 21-22."