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|Rulers|: select and edit up to 6 rulers.

|AutoScale:| when set, the |Copy| and |Replace| tools will scale objects when moving objects from this document to a document with a different ruler scaling.

|Show Unit Name:| if checked, then measurement readouts include the unit name. For example, a readout of "6cm" reads as "6" when this item is not checked.

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|Scaled: | sets the scaled readout units.

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|Equals:| specify the relationship between the size of the drawing (screen units), and the real world size.

|Screen Units|: select the size of the ruler's screen unit.

Specify a scaling multiplier. Only integers are allowed: you cannot specify fractions or decimal numbers.

Specify the multiplier for the screen unit. Use integral, decimal, or fractional values (i.e. "2", "2.3", or "1/2"). Resulting value must be at least 1/72 of an inch, and no greater than 6 inches.

|Grid Snap Divisions|: select the number of equally spaced grid snaps between each screen unit.

|Correspondence|: an bar shows the equivalence between the screen units (above) and the scaled units (below).

|Out:| the entries on this side show zoom-out magnifications. You are limited to 8X (but when editing, and depending upon the document window size, zoom-out can be increased beyond this amount).

|In:| the entries show zoom-in magnifications. You can zoom-in up to 8X.

|Zoom Preview:| if set, then you can select other magnifications to preview the custom ruler, above. 

|Magnification:| click or drag to select a different magnification to verify proper setup of scaling and divisions in the |Custom Ruler| preview.

|Standard Ruler|: this ruler provides readouts in the currently selected screen units. It is for reference, and will change when the screen units change.

|Ruler|: select one of six rulers preview and changing.

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Drag within the scaled ruler to see a sample readout at the specified magnification.

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|Scaled Preview:| shows ruler as it will appear when rulers are displayed at specified magnification. To see sample readout, drag in this ruler.

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