Know Your Scope - Leupold FX-3 Owner's Manual

PARTS oF THE SCoPE
Riflescopes have become far more sophisticated over the years, but
the four most basic parts have remained the same . Working from
front to back they are:
4
1 . The objective lens (or front lens) is critical to a superior
sight picture .
2 . The internal erector lenses which right the image .
3 . The reticle, often referred to as the crosshair, provides the
aiming point .

Know Your Scope

4 . The ocular lens (or eyepiece lens) works with the other lenses to
magnify the image, provide correct eye relief, and make
diopter corrections .