Transaclions Sociciy Naval ArchUecls and Marine Engineers, Vol. 20, igi2. 



To illustrate paper on " The Sperry Gyro-Compass in Service," 

 by R. E. Gillmor, Esq., Associate. 



Plate 108 



oyAo Jo u/cjy 



Fig. 13. — Starting Curve of Compass — Time and Speed of Wheel. 



