Müller-Lyer. Use the + and − buttons or arrow keys to adjust the size of the line. When the two lines appear to be equal, press the measure button. Try different endcaps: angles, arcs, none, centering, or centering control. Next, show options and try the suggestions in the Further Exploration section of this chapter.
Presets: horizontal, horizontal control, vertical, vertical control, ball ends, centering, centering control.
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