176 Hirrh I. AVIATION Mircli 1. 177 PENTZ COMPASS … competing designs. For SAFETY and EFFICIENCY depend upon us. “THE COMPASS THAT WIEL NOT SPIN*’ PENTZ, VAN ALEN ® DURKEE COMPASS CO. AMERICAN propeller & MFG. CO. 4 West 37tK Street, New YorK Contractors to United States Army and Navy have developed a 60 h.p. motor weighing: 130 lbs. for use in…
Aviation Week
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