wear the loupes, fasten the headband to wear them comfortably and securely.
Angled Hinge Adjustment
Adjust the hinge mechanism so that the optics are angled opproximately 30 to 45 degrees below a horizontal line.This will allow for the user to look down into the optics while working,keeping an upright posture.
Flip-up Hinge.
These loupes are hinged to flip up and down toifacilitate magnified and non-magnified visualization.The filp-up tension is adjusted by tightening the centre lock screw in the hinge .The lower lock screw should always be tightened securely,once the working angle has been set .
Fit on the side-shields from the tail of the frame,the side -shields will prevent aerosol spray of water,blood,and saliva from entering the eyes.
The two side screws is for fixing the lens to get good image,plese don't adjust.