Thread: Tall target test

How will I get the measuring tape perfectly level? A curve would change the measurement.
Fixed apparatus w/o shooting is the correct way. Not by shooting like internet says.
Camting errors shows up at range due the elevation dialed. You'd have the same angle as long as you dial. (Draw two lines with an angle, the further away from the start the larger the distance between the two lines).

The Minox works. I have no skill or instruments to compare optics.