Analytical Test Procedures (Cont)

TM 38-260

(d) Double check the table for any nicks or burrs that were not removed in (b) above.

(e) Place a precision square (precision knees or angle plates are acceptable) on the table and place a sheet of

tissue paper under each end of the square's base.

(1) Pull on the tissue papers to make sure they are tight beneath the base of the square.

(g) Ascertain that the square is perpendicular or parallel to the T-slots, depending on the check being made.

(h) Mount the indicator rigidly using a drill chuck.

(i) Move the table to contact the indicator point with approximately 0.001 inch (0.Ol mm) pressure.

(j) Set the dial on zero and move the spindle down to obtain the reading.

(k) Always make the inspection in the direction normally used in operating the machine.

(I) Observe the direction of the arrows on the test patterns and ascertain that they are followed.

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