BS 3731:1987

This standard BS 3731:1987 Specification for vee blocks is classified in these ICS categories:

• 17.040.30 Measuring instruments

This British Standard specifies requirements for hollow or solid, single or double vee blocks made from cast iron or steel and solid vee blocks made from granite, normally with a 90° included vee angle though the provisions of this standard are applicable to vee blocks with included vee angles other than 90°.

Two grades of accuracy, 1 and 2, are specified, and provision is made for matched pairs.

NOTE 1 Appendix A and Appendix B respectively deal with recommended dimensions for vee blocks with a maximum capacity of 200 mm diameter and with methods of test.

NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.

Hollow, solid, single and double vee blocks, normally with an included vee angle of 90°, accommodating cylinders of diameter up to 200 mm.