Directional Errors - SIRS Navigation KCA0101C Component Maintenance Manual With Illustrated Parts List

D. Directional Errors (Ref. Fig.1003)
(1) Adjust the 'B' and 'C' correctors to their neutral-effect alignment (Ref. Fig 11001)
i.e. the indicator lines are aligned with the index lines.
NOTE:
(2) Set the divided test head and its micrometer scale to be zero.
(3) Align the 'divided test head' to 'magnetic north' with use of the 'standard
magnetic needle'.
SUPPORT STAND
DIVIDED TEST HEAD
MICROMETER SCALE
The document reference is online, please check the correspondence between the online documentation and the printed version.
SIRS NAVIGATION LTD
COMPONENT MAINTENANCE MANUAL
An Alignment error of 0.5mm, i.e. the width of an index line, will cause
a deviation error in the compass of approximately 2.5°.
STANDBY COMPASS
Directional Error Test Jig
Fig. 1003
SIGHTING VANE
PAGE 1007
34-25-21
APR 10/03