Cased Instruments, ContinuedCompassesProtect the compass needle with cork or eraser bits. Periodically check the(Continued)leg alignment. Keep the pen clean and free of ink buildup. Wipe thecompass with a light oil cloth and return it to the case. Do not oil the joints.To check compass alignment, follow this table:StepAction1Spread legs on compass.2Bend joints toward center.3Needle and nib should touch.Figure 2-26 illustrates a test for alignment of the compass legs.Figure 2-26. —Testing a pivot jointcompass for alignment.Continued on next page2-25
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