Found 1 items, similar to Periscopic spectacles.
English → English (gcide) Definition: Periscopic spectacles Periscopic \Per`i*scop"ic\, a. [Cf. F. p['e]riscopique.] Viewing all around, or on all sides. [1913 Webster] [1913 Webster] Periscopic spectacles (Opt.), spectacles having concavo-convex or convexo-concave lenses with a considerable curvature corresponding to that of the eye, to increase the distinctness of objects viewed obliquely. [1913 Webster]