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