SpecterOS4x Operation Manual
Page 14
300
400
500
600
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↑
30” or 76 cm
@300m
↓
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__________________
↑
30” or 76cm
@500m
↓
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Figure 3.6 VSOR Rangefinder
3.6.4
Use of the VSOR Rangefinder (Model SFOV4-C1 only)
The Vertical Subtention Optical Rangefinder (VSOR) allows the marksman to estimate the distance to
targets by matching the height of a known object within the field of view. The vertical distance for range
estimation is 76 centimeters or 30 inches. By selecting the set of rangefinder lines that best fit a 30 inch
or 76 cm object, the marksman may read the correct range at the top of the rangefinder. Once the range
is known, the marksman may engage targets at that range by aiming from the appropriate ballistic aiming
mark in the reticle.
