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THE CRANDALL ENGINEERING Co. CONSULTING ENGINEERS CONTRACTING a DESIGNERS OF : DRY DOCKS” Almy Water Tube Star Brass Mfg. Co. Boiler Co. 53 Oliver Street -::- Boston, Mass. MANUFACTURERS OF Builders of Accurate ‘‘Non-corrosive’’ Pressure and Recording : Gages, Revolution Counters, Marine Clocks. Sectional Water Dead Weight Gage Testers. Tube Boilers Marine Safety and Relief Valves for all pressures. Marine Whistles and Sirens. for all types of yP Extra Heavy Renewable Globe, Angle and Check vessels Valves. Star Outside Spring Steam Engine Indicators. Providence, R.I. HIGH GRADE THROUGHOUT SPECIFY AND ORDER THE BEST. Branches: CHICAGO PITTSBURGH NEW YORK CATALOGUE FREE STROMBOS SUPERPOWERFUL MARINE SIGNALS Operate on 10 to 100 Ibs. air pressure. Made of Brass and Bronze in 15 Models and tones. PENETRATE AND DOMINATE ALL NOISES. Heard from SIX to EIGHT MILES. Require 1/10 the air used in all other signals, pro- ducing greater volume of tone. Nothing inside to get out of order—No moving parts, repairs or attention required. BEWARE OF INFERIOR STROMBOS SIGNALS ON THE MARKET. AMERICAN STROMBOS COMPANY, Inc. 18th AND MARKET STS. PHILADELPHIA, PA. Valuable territory open to Dealers : : T W. H. MORETON CORP., MARINE EQUIPMENT & SUPPLY CO., a aan at. 780 Commonwealth Ave. me Buhgl St., New York City Boston, Mass. ila., Pa. MARINE REvIEw—April, 1927 111