Hints For Better Operation

HINTS

FOR

BETTER

OPERATION

Do not use map pins, needles, ink pens or grease pencils. Using these items will damage the

board. Plotting should be done with a very sharp, soft lead pencil (No. 2 or softer). Be careful

when placing a plot on the disk, for a very small plotting error could cause the final data to be

off as much as 25 meters in range and more than 10 mils in deflection. To avoid distortion, you

should place your eye directly over the location of a point and hold your pencil perpendicular to

the board. The plot should be so small that it is difficult to see. For ease of identification, circle

and number each plot.

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