Page "learned" Paragraph 1408
from
Brown Corpus
The sighting procedure includes the use of a fixture for the transit to project a beam of light, which is darkened by crossed hairs, on the accelerometer mirror.
When the platform is aligned, the reflected image of the crossed hairs can be seen exactly superimposed upon the original crossed hairs.
The images can easily be aligned with a high degree of accuracy.
The platform is turned as required by supplying currents to the appropriate gyro torquers.
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