BS 3172-1:1959

Заменен

Screw threads for spectacle frames, Specification for screw threads of Unified form for spectacle frames including screwing taps and screw gauges

Заменен на

BS 3172-2:1980

ICS

11.040.70 Ophthalmic. Including ophthalmic implants, glasses, contact lenses and their cleaning products / Офтальмологическое оборудование