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Socketed Ball Bar Set, Standard Reference Material No. 2083 Socketed Ball Bar Set, Standard Reference Material No. 2083, no longer available from the National Institute for Standards & Technology (formerly National Bureau of Standards). Used for checking the calibration of coordinate measuring machines. Accuracy dependent on thermal expansion of the steel rods and on the roundness of the balls, which originally was within +/- 0.5 micrometers (10 microinches); the roundness charts are no longer with the set, however. Bar lengths can be made up in 50 millimeter increments from 100 millimeters to 1650 millimeters. For details see the NIST web page at: https://srmors.nist.gov/view_detail.cfm?srm=2083 https://srmors.nist.gov/view_cert.cfm?srm=2083 You can navigate around the NIST site before returning here with your browser's "back" button. Please email if you have any questions (please look at our rules and privacy policy) |
rosemarie-hobbs@machine--tools.com (Rosemarie Hobbs) for additional information. This email is used for forwarding to newsgroup user.
