TB 9-5210-214-35
8. Accuracy
a. Performance Check
(1) Ensure that the TI contact point is fully extended and that it is in contact
with the contact surface of the dial indicator calibrator.
(2) Set the TI to the closest major division for a zero reference point by rotating
the bezel. Press CL to zero the dial indicator calibrator.
(3) Adjust dial indicator calibrator until the first-numbered division (inward
deflection) on the TI is obtained.
CAUTION
Any movement or vibration of the dial indicator stand,
transducer, or TI may cause erroneous readings.
(4) The dial indicator calibrator readout should indicate the equivalent change
within the limits specified in table 1.
(5) Repeat (3) and (4) above at 10 or more numbered divisions across the range of
the TI.
(6) Adjust the dial indicator calibrator contact surface so that the TI contact
point is fully compressed. Press CL to zero the dial indicator calibrator.
(7) Repeat (3) and (4) above at 10 or more numbered divisions across the range of
the TI in an outward deflection.
(8) Check repeatability by adjusting dial indicator calibrator until TI reaches
approximately mid range. Press the CL key to zero dial indicator calibrator readout.
(9) Adjust dial indicator calibrator to lowest limit then, readjust for zero
indication on dial indicator calibrator readout. TI should read 1 graduation. Repeat
twice.
b. Adjustments. No adjustment can be made.
9. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.