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Message: <blockquote data-quote="Sout Fork" data-source="post: 806876" data-attributes="member: 34006">Apparently my scope predates the above-no rubber armor nor the peep sight on top of the prism housing.I did find a little history about it.Apparently the US Army at the start of WWII was thinking in terms of the trench warfare of WWI where human "spotters" were posted along the trench to keep an eye on the other side. They wanted some kind optical assist for this position so they contracted with the American firm of Bausch and Lomb Optical Co to build them a scope for this tactical position hence the term "spotting scope". That WWII version of our Spacemaster was a 50mm porro with a sealed non-removeable fixed ep to keep the unit sealed against rain and dust under field conditions.Apparently to this day Bausch & Lomb still makes a very expensive 10x40 tactical sniper rifle scope for the US military. I have seen them selling used for about $800 us.More than you ever wanted to know...SF</blockquote>