TB 9-5210-209-24
14. Vernier Depth Gage Calibration
a. Performance Check
(1) Set up two groups of gage blocks 1 inch high on triangular base.
(2) Set base of TI on gage blocks with main scale of TI between them.
(3) TI should indicate 1.000 0.001 inch.
(4) Repeat this check at 1.0000 inch intervals to full scale.
b. Adjustments. No adjustments can be made.
15. Final Procedure
a. Multiple rods included in a set may be protected from rust with light oil and sealed
in polyethylene material. Upon recalibration of the set, those rods with unbroken seals and
no evidence of damage or deterioration do not require recalibration.
b. Annotate and affix DA label/form in accordance with TB 750-25.