Transadions Society Naval Architects and Marine Engineers, Vol. 



?o, igi:2. 



To illustrate paper on "Active Type of Stabilizing Gyro,'' 

 by Elmer A. Sperry, Esq., Member. 



Plate Qi 



-TN 



Fig. iS.-Similar Apparatus for Making vSix Indepbndent Records upon the Same Tape, as follows: Roll 

 Pitch, Spotting, Spotting the Roll Curve, Timing and Azimuth of Ship's Heading. 



