TM 9-243USING A COMBINATION SQUARE - Continued5Remove the combination square and read thedepth at the intersection of the rule and the squarehead (4).4 Tighten setscrew (3).CARE OF SQUARESMake sure squares are kept clean.Apply a light coat of oil to all metal surfaces after using.A square with a loose stock is no good. Replace thesquare.13-8
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