in accordance with TM 38-750.
When TI's are not within
tolerance, replace with same size gage block and return
unserviceable blocks to unserviceable stock.
When more than 25
percent of the TI's calibrated are not within tolerance, annotate
and affix DA Form 2417, (Unserviceable or Limited use tag), to
the entire set.
designated for the operation.
At the end of the extended
interval, all TI's regardless of last calibration date) will be
If TI's are within tolerance, they will be
resealed and the cycle repeated.