(under subclass 811) Subject matter wherein the support includes relatively movable portions such as a track or slide to permit movement of the lens in its plane (which is perpendicular to its lens axis), while restricting other movements of the lens.
(1) Note. Other structure separate from the above defined relatively movable portions may be included even in the support to provide for nonplanar movement and yet not preclude classification here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
441+, for lens combined with scales, the lens being movable over the scale.
806, for lenses combined with a relatively movable informatory sheet.
