Posted 17 October 2013 - 05:23 PM
To answer my own question - it requires a metric 1.5 wrench. The thumb screws from the original mounting bracket for the scope cannot be used - they are the correct size but there is not space for them, at least not on mine. The silver setting circle (which is minus any numerical imprint) that comes with the scope is almost as thin as tinfoil. I was able to remove the setting circle off of the scope and put it onto the polar scope. Focus is smooth and alignment is fairly easy - although dealing with the allen screws is a bit of a pain. Overall, especially for the cost, I am very happy.