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BS 5477:1977 Method for visual assessment, by grid assay, of dirt in paper for character recognition standard by BSI Group, 06/30/1977
BS 3041-1:1977 Radio-frequency connectors. Specification for general requirements and measuring methods standard by BSI Group, 06/30/1977
BS 4508-4:1977 Thermally insulated underground pipelines. Specific testing and inspection requirements for cased systems without air gap standard by BSI Group, 06/30/1977
BS 9612 N008:1977 Detail specification for cold welded seal quartz crystal units for oscillator applications. DN, DQ and DP enclosures, 50 to 125 MHz frequency range. Fifth overtone thickness-shear mode, AT-cut, for operation over wide temperature ranges (non-temperature controlled). Full assessment level...
BS 9612 N007:1977 Detail specification for cold welded seal quartz crystal units for oscillator applications. DN, DQ and DP enclosures, 17 to 75 MHz frequency range. Third overtone thickness-shear mode, AT-cut, for operation over narrow temperature ranges (temperature controlled). Full assessment level...
BS 9612 N005:1977 Detail specification for cold welded seal quartz crystal units for oscillator applications. DN, DQ and DP enclosures, 0.8 to 20 MHz and 3.0 to 30 MHz frequency ranges. Fundamental thickness-shear mode, AT-cut, for operation over narrow temperature ranges (temperature controlled). Full assessment...
BS 9612 N009:1977 Detail specification for cold welded seal quartz crystal units for oscillator applications. DN, DQ and DP enclosures, 50 to 125 MHz frequency range. Fifth overtone thickness-shear mode, AT-cut, for operation over narrow temperature ranges (temperature controlled). Full assessment level...
BS 4737-3.3:1977 Intruder alarm systems. Specifications for components. Protective switches standard by BSI Group, 05/31/1977
BS 5472:1977 Specification for low voltage switchgear and controlgear for industrial use. Terminal marking and distinctive number. General rules standard by BSI Group, 05/31/1977
BS 4737-3.2:1977 Intruder alarm systems. Specifications for components. Foil on glass standard by BSI Group, 05/31/1977
BS 4737-3.1:1977 Intruder alarm systems. Specifications for components. Continuous wiring standard by BSI Group, 05/31/1977
BS 3073:1977 Specification for nickel and nickel alloys: strip standard by BSI Group, 05/31/1977