User's Manual

STONEX R2 PLUS
115
Ⅱ. Adjustment
(1) Set the instrument, and set the point A front the instrument 50m apart.
(2) Take off cover of telescope eyepiece, there are 4 screws for the reticle part.
(3) Loosen all four fixing screws slightly with the cross screw-driver.
(4) Revolve the eyepiece section so that the vertical cross-hair coincides to point A,
finally, re-tighten the four screws.
(5) Repeat the checking and adjusting until there is no deviation.
NOTE: After the adjustment of cross-hair, please check the collimation error and vertical
index error, see “§27.11 EDM Optical Axis and the Telescope Sighting Axis Error”.
26.8 Horizontal Collimation Error C
If the telescope’s sight line isn’t perpendicular to the horizontal axis, the collimation error
will appear. The assembling, transportation and operation will cause this error.
Ⅰ. Check
(1) Set-up the instrument on tripod or adjustment platform and leveling accurately.
(2) Aim at the cross-hairs of collimator or the obvious target at a distance. Gets the face
left angle reading H1 and the face right angle reading Hr.
(3) Calculating the horizontal collimation error C according to C=（Hl- Hr±180°）/2, if
C<8″, no adjustment will be necessary. If C>8″, proceed with the following adjustment.
Ⅱ. Adjustment
(1) Power on the instrument after leveling-up, and rotate telescope to initial.
(2) Aim at the cross-hairs of collimator or the obvious target at a distance. Gets
the face left angle reading H1 and the face right angle reading Hr.
(3) Rotate the instrument in face right position, turning horizontal tangent screw until
Hr′=Hr+C.
(4) Loosen the shield of telescope’s reticle. Adjusting two screws at left and at right until
the vertical hairs of telescope’s reticle coincides with the cross-hairs of collimator or
target.
(5) Repeat the check and adjustment procedure until the error is accepted.