BS 4779:1971 Recommendations for measurement of the optical transfer function of optical devices
BS 4341:Addendum No. 1:1971 (R2016) Methods of test for formic acid partTitleEN sectionTitleEN
BS 3908-6:1971 Methods for the sampling and analysis of lead and lead alloys - Tellurium in lead and lead alloys (photometric method)
BS L 112:1971 Specification for forging stock and forgings of aluminium-magnesium-silicon-manganese alloy (solution treated and precipitation treated) (suitable for welding) (Mg 0.8, Si 1, Mn 0.7)
BS L 114:1971 Specification for tube of aluminium-magnesium-silicon-manganese alloy (solution treated and precipitation treated) (not exceeding 10 mm wall thickness) (suitable for welding) (Mg 0.8, Si 1, Mn 0.7)
BS L 111:1971 Specification for bars and extruded sections of aluminium-magnesium-silicon-manganese alloy (solution treated and precipitation treated) (suitable for welding) (Mg 0.8, Si 1, Mn 0.7)
BS AU 156:1971 Recommendations for aiming of headlamps and auxiliary lamps on motor vehicles
BS 3L 63:1971 Specification for tube of aluminium-copper-mangesium-silicon-manganese alloy (solution treated and precipitation treated) (Cu 4.4, Mg 0.5, Si 0.7, Mn 0.8)
BS 2L 77:1971 Specification for forging stock and forgings of aluminium-copper-magnesium-silicon-manganese alloy (solution treated and precipitation treated) (Cu 4.4, Mg 0.5, Si 0.7, Mn 0.8)
BS 2L 93:1971 Specification for plate of aluminium-copper-magnesium-silicon-manganese alloy (solution treated, controlled stretched and precipitation treated) (Cu 4.4, Mg 0.5, Si 0.7, Mn 0.8)
BS L 105:1971 Specification for tube of aluminium-copper-magnesium-silicon-manganese alloy (solution treated and aged at room temperature) (not exceeding 10 mm wall thickness) (Cu 4.4, Mg 0.5, Si 0.7, Mn 0.8)