This story shows how to install a peephole.
Center the peephole about 65 inches above the floor. Drill a hole with a spade or a Forstner bit, stopping just when the point breaks through the other side.
Finish the hole from the opposite side of the door. Hold the drill back from pushing through; it is easy to splinter the other side.
Push the lens end of the peephole into the hole on the outside of the door.
Finish the installation by screwing the inner ring in place.
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