Specifies requirements, both optical and mechanical, for 4 types of appliances.
- You cannot add another "BS 173:1928" to your cart. View cart
BS 7522-2:1993
Original price was: $190.50.$95.00Current price is: $95.00.
Low vision aids-Specification for spectacle magnifiers and similar devices
BSI Group , 03/15/1993
