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 TM 55-1905-223-24-1
FIGURE 4-82. Counterbore Ledge Angle Measurement.
FIGURE 4-83. Upper Counterbore Measurement.
(5) Measure inside diameter of lower counterbore (3, FIG. 4-84). The point of measurement
must be within 0.100 inch (2.5 mm) from the top of the counterbore ledge. Verify
measurement is within specifications in Table 4-8 . Verify lower counterbore is round within
0.001 inch (0.025 mm).
FIGURE 4-84. Lower Counterbore Measurement.
4-92
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