Transactions Society Naval Architects and Marine En'^inecrs, Vol. 20, igr2. 



To illiistnitc paper on " The Spcrry Gyro-Compass in Service,'' 

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



Plate 101 



Fig. I. — Section of Compass in the Plane of the Gyro Wheel. 



Fig. 2. — Correction Device. 



