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