TB 9-5210-205-50
(7) Remove TI and insert master block to ensure that proper setting of instrument
was maintained during measurement; remove master block and insert TI.
(8) Take readings at reference points 1, 2, 3 and 4 A (fig.1) avoiding the area of
block 0.020″ from edge of the block, back to the edge. Record the four readings in respective
columns on calibration worksheet in millionths of an inch with proper signs. The algebraic
difference will be within limits found in table 1 tv column.
(9) Repeat (3) through (8) above for each TI in set being calibrated.
b. Adjustments. No adjustments can be made.
a. Transfer individual block identification and size deviation to a test results report.
One copy will be maintained by the calibration facility and one will be packaged with the
TI. Add all pertinent information.
b. Preserve TI as follows:
(1) Wipe each TI with clean polishing cloth and apply thin coat of oil. Ensure that
all surfaces are covered.
(2) Wrap and seal TI as described in (a) through (d) below:
(a) Select appropriate size polyethylene tubing and cut length of tubing long
enough to completely sheath TI.
(b) Seal one end of tubing prior to inserting TI.
(c) Insert TI in tubing and seal close to TI with heat sealer.
(d) Remove excess overhang to approximately 1/16 inch from seal line to
minimize bulkiness. Check seams for adherence to assure effective sealing.
(3) Insert TI in appropriate place in carrying case. Use cushioning material to
protect TIs as required.
c. Package TIs listed in (1) through (6) below:
(1) Place smooth side of barrier material directly on top of TI in opened case.
(2) Package calibration worksheets in suitable envelope and place in clear polyethylene.
(3) Place a copy of test results on top of barrier material.
(4) Place the following notice conspicuously on inside lid of storage box.
NOTE
The polyethylene protective cover on gage block is a control
measure. Break seal on protective cover only on those gage
blocks which are required to perform an operation or
measurement. Do not break seals on any gage block unless
absolutely necessary.
(5) Close lid and make sure that clasps are secure.
(6) Bind the closed case with tape to prevent case from coming open during transit.