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Chronometric Type: 
 Construction
  Diagram and sectionalized instrument.
 Advantages over Centrifugal Type
  Less lag
  More positive mechanical operation.
  No vibration of pointer.

Magnetic Type:
 Brief discussion.

Electric Type:
 Brief discussion.

EXAMINATION
4TH PERIOD.

R A D I O

CODE practice is emphasized throughout the 45 hours devoted to this subject. Radio Telegraph and Radio Telephone are taught and students receive practical experience on both, together with installation and operation. Transmitters and Receiving Units are given both theoretically and practically.

THEORETICAL lectures are given from time to time throughout the practical course covering:

Storage Batteries
Elementary Electricity
Primary Batteries
Elementary Principles of Radio
Telegraphy and Telephony
Theory and use of Wavemeters
Antenna Systems, etc.

P H O T O G R A P H Y

In the five hours devoted to Aerial Photography the student is given a general idea of photography and its relation to the Air Service.

LECTURE NO. 1.

Organization of the Photo Section
Relation to Air Service
Functions, etc.

LECTURE NO. 2.

Aerial Photographs
 Types
 Uses.

-15-  U-521, A.S.