When the angle between two targets is larger than the angle measuring range (100 mils), it can be measured in several steps.
The horizontal angle of cruiser shown in Fig. 5, is 130 mils (60+70=130).
6.4 Measuring vertical angle using the reticle
Fig. 5.
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.
10