October, 1926 MARINE REVIEW 1k THE CRANDALL ENGINEERING Co. CONSULTING ENGINEERS CONTRACTING BOSTON , MAss. \ DESIGNERS OF DRY DOCKS | | am 1 DROP: FORGED WELDBLESS EYE BOLTS ROLLED THREAD GALVANIZED OR PLAIN Engineering Specialties REFLEX WATER GAGES Used on all types of boilers by all the Principal Navies of the World “THE WATERSHOWS BLACK” ADVANTAGES: Quick and reliable observation of 16” DIAM. WITH EYE %” INSIDE the water level. Safe, sure and Bn “ Se ry 14" 5 durable at high pressures. Not af- 8 8 fected by cold air drafts. Most 34" “ “ 8 eee “ effective protection against injuries to boilers and workmen. Easily ap- Me sy +a week UA: A plied to all types of gage glass fittings. When filled with WATER the Reflex Gage always —_ appears QUICK SHIPMENT BLACK. When empty it instantly shows WHITE. No mistake _pos- sible. This feature alone is worth many times the cost of the Reflex OLIVER IRON AND STEEL CORP. Send for catalog of Water Gage 1001 MURIEL ST Apparatus. PITTSBURGH, PA. MANUFACTURED BY THE JERGUSON GAGE & VALVE CO. ESTABLISHED 1863 WINTER HILL. SOMERVILLE, MASS. Please mention MARINE REVIEW when writing to Advertisers