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Description / Abstract:
This Standard specifies the most important design and
metrological characteristics of gage blocks with a rectangular or
square cross-section and a nominal length ln ranging
from 0.5 mm to 1 000 mm for metric sizes and 0.010 in. to 40 in.
for inch sizes. It is not the intent of this Standard to preclude
the use, by contractual agreement, of gage blocks of other shapes,
grades or materials.
Limit deviations and tolerances are stated for the calibration
Grade K and for the Grades 00, 0, AS-1, and AS-2 for various
measuring purposes.
NOTE: To avoid confusing Grades 1 and 2 with previous
definitions, the prefix "AS" for "American Standard" should be used
for all sets using the grade tolerances in this Standard.
NOTE: The characteristics of Grades K, 0, AS-1, and AS-2 are
identical to those of the same name in ISO 3650: Gage Blocks, with
the exception that in this Standard the length of the block is
defined when measured in the vertical orientation. Grade 00 has
been added to conform more closely to the current U.S. Standard
(see section A1).