3D Lorgnette replaceable lens qty 10

Tired of throwing away your 3D Lorgnettes because they are getting grungy.  Here is an environmentally sensitive solution, throw away only the lens and not the body or the lorgnette.  We offer this solution which works for stereo pairs up to around 6 inches total.  This is the kind seen in journals such as the ISU's Stereoscopy and the British Stereoscopy Society Journal.  

These are the replacement lenses for our 3D Lorgnette

The focal length of the lenses are approximately 7 inches.