AS B269-1968

Deals with basic dimensions and accuracy of vee blocks used for precision measurements. It defines a standard range of blocks capable of accommodating cylinders from 1/8 in. to 5½ in. diameter. It provides for three grades of accuracy and includes some basic terms and definitions. Although basically concerned with blocks having an included angle of 90° the Standard can also be used for other angles with certain modifications of nominal dimensions affected by the change in vee angle.

This specification is concerned with vee-blocks having 90¦ included angle, used in engineering for operations requiring high precision.NOTE: The specification may also be used for vee-blocks other than 90¦, with regard to all provisions except nominal values of vee angle and related dimensions, which are to be specified separately.The standard range of vee-blocks comprises three grades of accuracy and six size varieties, capable of accommodating the range of cylinders from 1/8to 5 1/2in (diameter).The specification defines only basic parameters and requirements, leaving the details of the design for determination by individual designers depending on intended usage and/or other factors.

Reconfirmed 1987