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BS S 157:1976

Specification. 3% nickel-chromium-molybdenum case-hardening steel billets, bars, forgings and parts (1180-1380 MPa)
standard by BSI Group, 04/30/1976

BS QC 410101:1990

Specification for harmonized system of quality assessment for electronic components. Blank detail specification. Load screw actuated and rotary preset potentiometers. Assessment level E
standard by BSI Group, 09/15/1990

BS PD ISO/TR 230-9:2005

Test code for machine tools. Estimation of measurement uncertainty for machine tool tests according to series ISO 230, basic equations
standard by BSI Group, 12/05/2005