"LEFT HAND;TREATED PER FED SPEC TT-W-572,OLIVE DRAB ENAMEL COATING PER FED SPEC 529,0.562 IN.RADIUS HOLE CENTERED ON W,RIGHT TOP CORNER RECESSED 1.250 IN.LONG BY 0.750 IN.DEEP,BOTTOM LEFT CORNER CHAMFERED 45 DEG ANGLE BY 0.375 IN.DP;WOOD PER MIL-W-3912 CLASS A"