The Collaborative International Dictionary of English v.0.48:

Reading \Read"ing\, a.
   1. Of or pertaining to the act of reading; used in reading.
      [1913 Webster]

   2. Addicted to reading; as, a reading community.
      [1913 Webster]

   Reading book, a book for teaching reading; a reader.

   Reading desk, a desk to support a book while reading; esp.,
      a desk used while reading the service in a church.

   Reading glass, a large lens with more or less magnifying
      power, attached to a handle, and used in reading, etc.

   Reading man, one who reads much; hence, in the English
      universities, a close, industrious student.

   Reading room, a room appropriated to reading; a room
      provided with papers, periodicals, and the like, to which
      persons resort.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "reading glass":
   achromatic lens, astigmatic lens, burning glass, camera,
   coated lens, concave lens, concavo-convex lens, condenser,
   convex lens, eyeglass, eyepiece, glass, hand lens, lens, magnifier,
   magnifying glass, meniscus, object glass, objective,
   objective prism, ocular, prism, reader, telephoto lens, toric lens,
   varifocal lens, zoom lens