BS 4311-2:2009

BS 4311-2:2009 Gauge blocks manufactured to imperial specification. Accessories

BS 4311-2 specifies requirements for accessories intended for use with metric and inch gauge blocks conforming to BS EN ISO 3650 and BS 4311-1:2007+C1:2009, and includes two types of measuring jaw (Type A and Type B), scriber points and centre points, bases and holders.

Requirements for general dimensions and the form, material, surface finish and accuracy of various features are specified.

Examples of typical assemblies of accessories are given as are notes on their use. Details of other items which may be used with gauge blocks and accessories are also provided.

Contents of BS 4311-2:

• Foreword
• Introduction
• Scope
• Normative references
• Terms and definitions
• Material for accessories, other than the guide plates of holders
• Type A measuring jaws
• Type B measuring jaws
• Scriber point and centre point
• Base
• Holders
• Marking
• Case
• Protection against adverse climatic conditions
• Notes on the use of gauge block accessories
• Accessories
• Bibliography