TB 9-5855-1891-40
Figure 2. Rheostat control attachment.
NOTE
TI assembly is comprised of optics assembly, autocollimator
and rheostat control.
NOTE
Allow 24 hours settling time for TI temperature to stabilize to
laboratory temperature.
8. Boresight Collimator Test Set Accuracy
a. Performance Check
(1) Look through EYEPIECE, turn RHEOSTAT CONTROL cw until horizontal and
vertical reticles are visible and STATIONARY RETICLE is illuminated (fig. 3).
(2) Turn EYEPIECE until STATIONARY RETICLE and NUMBER MARKINGS are
in focus (fig. 3).