Abstract: Our improved optical device assembly method uses O-rings to secure an internal optical component in place and protect it from making contact with the housing. Our method is affordable and easy to manufacture, it also eliminates the need for special tools, aperture reducing threaded inserts, adhesives or a considerable amount of time to assemble an optical device. Our preferred method of assembly is adjustable to a variance in the dimensions of the internal components. The housing (10) for this device contains a lens/magnifier (14) that is separated by use of two O-rings (12) which function to position and protect the internal components from making contact with the housing. A housing plate (16) will be mounted on the bottom of the optical device to hold the internal components in the upper housing.