Caution for Handling
1. The vital part of the stereoscope is the lens.  Therefore, sufficient care must be taken in handling the lens.  If the lens gets dirty or dusty; wipe the surface with a clean lens tissue or soft cotton cloth.
2.	After the stereoscope set is used, it should be covered with a cloth and be put bax in the box for screening from dust.
3.	Stereoscope should be stored in a moisture free place.  Moisture build-up on the light will cause a reduction  in light intensity.
4.	When the stereoscope is not used for a long period of time, remove the light source batteries.