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34 MARINE REVIEW December, 1925 ‘4 ee Y v.: 7: ) ee % i Zz a yi q° Z ZG. Z Z g Z Z . G 2° c WON" | RR “DIEHL” matine type, enclosed, _ self-ventilated, ball bearing Generator with special mica insula- 100, «8 IS VV; 32 V;, driven by Diesel engine. For installation on U.S. Coast Guard boats. DIEHL Manufacturing Company Elizabeth, N. J., U. S. A. Cummings Combination Counter & Telltale Officially approved as conforming to Emergency Fleet Technical Order No. 104 IMMEDIATE DELIVERIES THIS JOINT is one of the reasons why | ey wh ee LO are strong 4 yet light Continuous Rotary eight figure large numeral counter with’no trouble- some reciprocating parts. Countershaft geared down | to 10 of main shaft. Positive counter with adjustable friction-drive telltale, 9-inch dial. Same hardened steel counter as used by U. S. navy on all destroyers, battleships, etc. To determine R. P. M. hold watch in one hand and telltale on zero with other hand, release and stop after interval of 60 seconds. We also furnish driving mechanism from main shaft to counter. Cummings Machine Works ELLis CHANNEL SYSTEM OF STEEL HULL CONSTRUCTION PATENTED _ 30 Church Street 255 Atlantic Ave. BOSTON, U.S. A. ar ree New York Please mention MARINE REVIEW when writing to Advertisers