 in scale, the ruler should put its tick marks twice as far apart. This scale is stored in the <CODE>
VRI_scale</CODE>
 field. The ruler automatically receives a MSG_VIS_RULER_VIEW_SCALE_FACTOR_CHANGED when the main view's scale changes. To set the scale independently of the main view scale, send a <CODE>
MSG_VIS_RULER_SET_SCALE</CODE>
. </P>
<P>
The <A NAME="Ruler_3.htm_IX_VRI_origin">
 </A>
<CODE>
VRI_origin</CODE>
 field allows you to set an origin for the ruler other than (0,0). The coordinates are give