TB 9-5210-205-50
carrying case in accordance with TB 750-25. When TIs are not within tolerance, replace
with same size gage block and return unserviceable blocks to unserviceable stock. When
more than 25 percent of the TIs calibrated are not within tolerance, annotate and affix DA
Form 2417 (Unserviceable or Limited use tag) to the entire set. At the end of the extended
interval, all TIs (regardless of last calibration date) will be recalibrated. If TIs are within
tolerance, they will be resealed and the cycle repeated.
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