16
Matters Needing Attention
If drone is not in eyepiece visual field, turn angle of prism compensator to 0° or 90°, and
turn adjusting knob of prism compensator to the left or right to make measurement easy.
C.
Turn diopter measuring hand-wheel to obtain clearest focus of drone.
D.
Values of prism degree are read on eyepiece dividing plate and prism
compensator respectively, and the sum of both values is prism degree of
this prism lens (Figs. 18 and 19).
E.
Basal angle of this prism lens is read on prism compensator (Fig.19).
Fig. 18
Fig. 19
Important Matters
* If value of prism degree is to be read from left side of reticle 0, 180º shall be added
to that of basal angle of the prism lens.
It can be known from Fig. 18 and Fig. 19 that measured data of this prism lens are:
prism degree 16
∆
and basal angle 210°.
4.3 Calibration of Lens
4.3.1
Calibration of Spherical Lens
1.
Turn diopter measuring hand wheel to obtain clearest focus of drone.
Содержание LM 300
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