Transaclions Society Nam! Architccls and Marine Engineers, Vol. 20, TQ12. 



Plate 102 



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

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



Fig. 3. — Instrument with Covers Removed. 



Fig. 4. — Master Compass, Top Cover Removed. 



