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66 Send for Descriptive Pamphlet now and read about the New Kolster Radio Compass and its 15 Vital Improvements All the important features of this remarkable Kolster instrument could not be pressed into this or many announcements. We suggest that you immediately send for descriptive pamphlets, which tell the more intimate details. In the Kolster Compass you'll find an instrument of utmost precision, bettered now by many advanced improvements—an enclosed loop, shielded from the difficulties of ice, snow or wind—a new visual signal light—an improved com- pensator—a simpler, more positive direction-definer—the latest single-dial, ultra-selective 8-tube receiver and many other outstanding features. It is an entirely new model with a newer, higher standard of service and accuracy. MANUFACTURED AND SOLD BY FEDERAL TELEGRAPH COMPANY 25 Beaver St., New York Rockefeller Bldg., Cleveland Hobart Bldg., San Francisco Engineering Specialties “THE WATER SHOWS BLACK” Gack and reliable observation of the water level. Safe, sure and durable at high pressures. Not af. fected by cold air drafts. Most effective protection against injuries to boilers and workmen. Easily ap- plied to all types of gage glass fittings. When filled with WATER the Reflex Gage always appears Operating for years without interrup- Locks and Latches Doors and Hatches The selection of hardware and fittings is an impor- tant factor in producing standard ships and boats at reasonable prices. act wel oe cae bs supplying oe = oer REFLEX WATER GAGES Pe eet RAV tT GG chain cucae ne Used itt f boil b ll og Peacinal ho "4 the World W ; &3 a | s TIEBOUT Marine Hardware ADVANTAGES: 118 Chambers Street New York, BLACK. When empty it instantly shows WHITE. No mistake pos- sible. This feature alone is worth many times the cost of the Reflex. Send for catalog of Water Gage Apparatus. MANUFACTURED BY THE JERGUSON GAGE & VALVE CO. WINTER HILL, SOMERVILLE, MASS. tion on many of the largest ships afloat, Paracoil equipment is accepted as standard throughout the marine world. Paracoil equipment includes the fol- lowing: Feed Water Heaters, Oil Heaters, Oil Coolers, Feed Water Filters and Grease Extractors, Evaporators, Distil- lers, Steam Traps, Exhaust Gas, Steam or Hot Water Generators—for Diesel Plants, and Rand System for Heating Bunker Oil. Write for our interesting catalog. DAVIS ENGINEERING CORP. 90 West St. New York City Factory: Elizabeth, N. J. MARINE REVIEW—May, 1927