Transactions Society Naval Architects and Marine Engineers, Vol. 30, 1922. Plate 
To illustrate paper on “Automatic Steering,’ by Elmer A. Sperry, E. D., Member. 
anne 5 Peete 
| ‘i tt 
: | EE EEE 
| iE +- isle EEE 
SeEniide 
7 - See 
aera Fees FH | 
EE HH HoH oo 
Lt | co seers il 
EECRPEEEEL EEA & sigeaeeuue 4 
pe) 8 : sae ee pee 
Secueaanr/taga pt tes} eeEEEaE cee 
ir T 180 eo i L | Be 
: a I 
t | HE 
EESEEEREEEEEE) FRECHE BeEe 
: cae ace a 
a ° ib eda br 
O [* ED TOM 8 1G. S 
° NCoseCessce, 22s 
j iS 
Ci UNG EBY CASING TH 
Figs. 6 and 7.-Group of records showing the difference between 
steering by magnetic and by gyro by the same helms- 
man, Fig, 6 being a small part on natural scale, 
Fig. 7 being parts of a similar record on a scale 
magnified ten times, The instantaneous action of 
the gyro compass and the complete absence of lag 
make possible the marked difference apparent. 
