Transactions Society Naval Architects and Marine Engineers, Vol. 24, 1916. Plate 
To illustrate paper on “The Commercial Gyroscopic Compass,” 
by Elmer A. Sperry, Esq., Member. 
: 
Fic. 3.—SeEcTIONAL VIEW OF BINNACLE AND Portion oF Compass SHOWING INTERNAL 
ARRANGEMENT AND GLASS COVER. 
100 oe 280° 29 
Fic, 4—THer Navy Type or Gyro-Compass Carp, SHOWING BINNACLE. 
