<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>I think this a scope that went on the Mark 10 and 15 heads. You could use it to inspect the pole tips. Also it looks like three adjustment screws for a non guide servo head.</div><div><br></div><div><br><img src="http://i.ebayimg.com/images/i/331330088432-0-1/s-l200.jpg"><br><p><span id="phoneURL">View item:<br><a href="http://pages.ebay.com/link/?nav=item.view&alt=web&id=331330088432">AMPEX ADJUSTMENT TOOLS, OMAG 26-50X SCOPE, BLOCKS</a></span></p><p>End time: Sep 28, 2014, 10:02:32 PM EDT</p></div><div><br><br>Chris Hill</div></body></html>