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February, 1927 MARINE REViIGw 57 The Perfection Water Still Marine Type A Perfect Anti-Corrosive Protective Coating Cleaned in five Minutes TRACE MARK Thorkote is a plastic material easily applied over insulating materials by brush, trowel or spraying. It fills a long felt need for a waterproof covering for Magnesia and other heat insulation. Thorkote is pure asphalt, emulsified in water, and is applied cold. The coating left after evap- oration of the water is waterproof, rust- proof, and fire-resistant, unaffected by brine drip, acid fumes and corrosive gases. It is free from weather cracks, adheres Stock sizes 5 G. P.H. to 300 G. P. H. Full information, blue prints, prices, etc. on request. Perfection Equipment Co. Market and 4th Sts. St. Louis, Mo. permanently to any solid surface, wet or dry, and is flexible and ductile at low tem- peratures, yet will not creep or flow at comparatively high temperatures. It is the ideal protective agent for use in the marine field on anything requiring perma- nent covering. Engineering Specialties REFLEX WATER GAGES Used on all types of boilers by all : : the Principal Navies of the World Some Marine Some Marine “THE WATERSHOWS BLACK” Users: Uses: ADVANTAGES: S.S. Leviathan Feed and Oil Heaters Quick and reliable observation of S.S. hea e field aes ame Shaft Alley the water level. Safe, sure and S.S. Bea Fh AC Ste: Fr, s durable at high pressures. Not af- S.S. Southern Cross re fae ; S.S. Carabobo Coal Bunkers fected by cold air drafts. Most : : : rp One S.S. Albany Bulkheads effective protection against injuries : : ; S.S. Christobal Tank Tops te borers apd Mirai Daag ed _ S.S.. President Harding Coffer-dams plied to all types of gage glass fittings. SS Ges. Washingtn Hulls When filled with WATER the S.S. Hendrick Hudson Holds Reflex Gage always | appears S.S. Apache Rudders BLACK. When empty it instantly S.S. Momus Boilers shows WHITE. No mistake pos- S.S. Carillo Decks sible. This feature alone is worth S.S. Dillwyn Inner Bottoms many times the cost of the Reflex. Ferry Hackensack Smoke Stacks Send for catalog of Water Gage Tender Bermudian Deck Lines Apparatus. MANUEAGTURER EX 203 The Thorkote Products Co., Inc. JERGUSON GAGE & VALVE CO. 135 Liberty Street New York City WINTER HILL, SOMERVILLE, MASS. Please mention MARINE REVIEW when writing to Advertisers