Noticed a couple of things wrong when I had the sight in my hand.
The windage zero line was on the wrong side and according to the original patent diagram, the eyepiece was on the bottom instead of the top of the arm.
Just a matter of reversing the bits and bob's your uncle.
This sight has an .07 peep and the magnifier lens in front is 2.25, you need this lens to correct the image when used with the foresight lens...otherwise you'd be like us aussies....standing on your head.