
Specification for filters, cover lenses and backing lenses for use during welding and similar operations.
STANDARD published on 30.6.1989
    
        Designation standards: BS 679:1989
                
                
                
                Note:    WITHDRAWN
               
                Publication date standards:  30.6.1989
        The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
        Country:          British technical standard
        Category: Technical standards BS