Established in 1952

Page: 3930

The New Device, meets A.N.S.I. B89.4.1-1997 and I.S.O. 9000 traceability requirements for Coordinate Measuring Machines. The revised A.N.S.I. standard for "Performance Evaluation of Coordinate Measuring Machines" prescribes the measurement of a calibrated gage block in addition to the conventional Ball Bar (Dumbbell) test.

The Gage Block requirement gives an actual traceability to the National Institute of Standards and Technology and through it to the international standard length while the self checking Ball Bar (Dumbbell) evaluates the accuracy of the machine geometry the performance of the measuring probe and the proper function of all three scales. This new device combines a specially designated 4 inch (101.6mm) long gage block as prescribed in paragraph 5.6 of the A.N.S.I. B89.4.1-1997 standard, with a Ball Bar (Dumbbell) in the same single fixture.

This combination design allows both the traceability as required by I.S.O.9000 and a volumetric evaluation of the ANSI specification to be performed simultaneously.

This new device provides substantial time savings at a modest acquisition cost.