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January, 1910 TAE Marine REVIEW . : 45 Hutchison Marine Tachometer Aetna at = Prats ra el paTENTS baal 4 Engine Room Type Indicator Saves Coal--Prevents Accident | Accurately indicates at any number of places aboard ship, the Direction and Rate of Rotation of the Screws No Commutators, Brushes or Contacts to clean or renew No Batteries to charge or replace | No Pipes to leak or become stopped up No Pumps to Pack or repair No Shafts to break No Attention Required Steady Pointer Simple, Durable Continued Accuracy - Guaranteed s The Industrial Instrument Company MARINE DEPARTMENT 50 Church St. New York FOXBORO BOSTON ' CHICAGO NEW YORK SAN FRANCISCO