Specifies requirements, both optical and mechanical, for hand-held and stand-mounted magnifying appliances for use as near vision aids. Includes simple and compound magnifiers.
BS 7522-1:1992
Original price was: $190.50.$95.00Current price is: $95.00.
Low vision aids-Specification for hand and stand magnifiers, including magnifiers with an integral source of illumination
BSI Group , 02/28/1992
