Instructions
The screws on the Head Mount Magnifier 1.5X, 2.0X, 2.5X, 3.5X plastic lenses need to be tightened to keep it from coming loose.
The screws on the Head Mount Magnifier 1.5X, 2.0X, 2.5X, 3.5X plastic lenses need to be tightened to keep it from coming loose.