Perpendicularity Of The Line Of Sight To The Horizontal Axis (2C) - Horizon Fitness HTS-580 Series Operation Manual

adjustment to see if the adjustment is correct.
4. Replace the eyepiece cover.
12.4 Perpendicularity of line of sight to Horizontal Axis
(2c)
Inspection
1. Set an object A at a far distance the same height as the instrument, then level
and center the instrument and turn on the power.
2. Sight object A in the left position and read the horizontal angle value
( horizontal angle L=10°13 '10" ).
3. Loosen the vertical and horizontal clamp screws and rotate the telescope.
Sight object
A in right position and read the horizontal angle value.(horizontal angle Ｒ＝ 190
°13'40"）.
４.２Ｃ＝Ｌ－(Ｒ±180°)＝－30"≥±20"，adjustment is necessary.
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