Separate stadia are provided with {TAIL ~ the reticle}, allowing the marksman to gauge the angle subtended by an object of known size to determine {HEAD ~ the apparent distance} to the target 
Separate stadia are provided with { TAIL ~ the reticle } , allowing the marksman to gauge the angle subtended by an object of known size to determine { HEAD ~ the apparent distance } to the target
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH