Transactions Society Naval Architects and Marine Engineers, Vol. 24, 1916. Plate 126. 
To illustrate paper on “The Commercial Gyroscopic Compass,” 
by Elmer A. Sperry, Esq., Member. 
x ~ 10 j f 
Nanalenalin 2 
ne 1 tl yf 
Op 
Fic. 8—EIGHT-INCH REPEATER WITH MouNTING Fic. 9—ReEcorDING CoMPASs. 
; AND DIMMER. 
