Newcon Optik 7x50 AN Binoculars with Compass and Reticle - Manual (Page 17)

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Vertical angle measurement is similar to horizontal angle
measuring.
When height of the target is smaller than the reticle scale,
its height can be obtained in one measurement.
The height of the beacon, shown in Fig. 6, is 65 mils.
For targets taller than the reticle scale, perform
measurement in steps in the same way as it is described
for the horizontal angle measurement.
Fig. 6.