BS 939-2007 工程角尺(包括圆柱直角规和短形角尺).规范

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【英文标准名称】:Engineers’squares(includingcylindricalandblocksquares)–Specification
【原文标准名称】:工程角尺(包括圆柱直角规和短形角尺).规范
【标准号】:BS939-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-10-31
【实施或试行日期】:2007-10-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:准确度;角度测量;块材;圆柱形;设计;名称与符号;尺寸测量;尺寸公差;尺寸;平整度;硬度;作标记;粗糙度(表面);平滑度(表面);直角尺;钢;试验设备
【英文主题词】:Accuracy;Angularmeasurement;Blocks;Cylindricalshape;Design;Designations;Dimensionalmeasurement;Dimensionaltolerances;Dimensions;Flatness(surface);Hardness;Marking;Roughness(surface);Smoothness(surface);Squares(instruments);Steels;Testequipment
【摘要】:ThisBritishStandardspecifiesrequirementsforengineers’trysquares(excludingadjustablesquares),cylindricalsquaresandblocksquaresofsolidoropenform.Section1specifiesgeneralrequirementsapplicabletoalltypesofsquare.Section2specifiesrequirementsforengineers’trysquaresinthreegradesofaccuracy,AA,AandB,withinnerlengthsofbladefrom50mmuptoandincluding1000mm.Section3specifiesrequirementsforcylindricalsquaresinaccuracygradeAAinsizesfrom75mmuptoandincluding750mm.Section4specifiesrequirementsforsolidformblocksquaresinaccuracygradesAAandAinsizesfrom50mm×40mmuptoandincluding1000mm×1000mm.Section5specifiesrequirementsforopenformblocksquaresinaccuracygradesAandBinsizesfrom150mm×100mmuptoandincluding600mm×400mm.NOTEWhilethestandardprovidesforsquaresinvariousgradesofaccuracy,itshouldbenotedthattheiraccuracyinuseisdependentupontheflatnessofthesurfacesonwhichtheyareused.
【中国标准分类号】:J42
【国际标准分类号】:17_040_30;25_060_01
【页数】:34P.;A4
【正文语种】:英语