Each Sperry Gyro-Compass is on test for several days. During this time
it is put through every devisable test to simulate the conditions
under which it will have to operate. Figures 38 and 39 show a compass
mounted on a stand which is operated by means of motor driven gears,
cams, etc., so as to reproduce the roll, pitch and yaw of a ship at
sea. Absolute accuracy of the Master Compass and all repeaters while
operating under this condition is required.
The purchaser is thereby assured that the compass to be installed upon
his ship will have had all manufacturing inaccuracies or so-called
“kinks” worked out. A record of the test accompanies each compass.