c. Equipment Required
Table 2 identifies the specific equipment used in this calibration procedure. This
equipment is issued with secondary transfer calibration standards set 4931-621-7877 and
is to be used in performing this procedure. Alternate items may be used by the calibrating
activity when the equipment listed in table 2 is not available. The items selected must be
verified to perform satisfactorily prior to use and must bear evidence of current
calibration. The equipment must meet or exceed the minimum use specifications listed in
table 2. The accuracies listed in table 2 provide a four-to-one accuracy ratio between the
standard and TI. Where the four-to-one ratio cannot be met, the actual accuracy of the
equipment selected is shown in parenthesis.
d. Accessories Required
The accessories listed in table 3 are issued with secondary transfer calibration standards
set 4931-621-7877 and are to be used in this calibration procedure. When necessary,
these items may be substituted by equivalent items unless specifically prohibited.
e. Preliminary Instructions
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