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# Draw.Ruler()

## Definition

Draws a ruler.

## Method Return Value

A **[Ruler](/developer/desktop-sdk/references/common/drawing/draw-ruler/ruler)** object that represents the draw object.

## Syntax

`Draw.Ruler(NinjaScriptBase owner, string tag, bool isAutoScale, int startBarsAgo, double startY, int endBarsAgo, double endY, int textBarsAgo, double textY)`

`Draw.Ruler(NinjaScriptBase owner, string tag, bool isAutoScale, DateTime startTime, double startY, DateTime endTime, double endY, DateTime textTime, double textY)`

`Draw.Ruler(NinjaScriptBase owner, string tag, bool isAutoScale, int startBarsAgo, double startY, int endBarsAgo, double endY, int textBarsAgo, double textY, bool isGlobal, string templateName)`

Draw\.Ruler(NinjaScriptBase owner, string tag, bool isAutoScale, DateTime startTime, double startY, DateTime endTime, double endY, DateTime textTime, double textY, bool isGlobal, string templateName)\`

## Parameters

| Parameter    | Description                                                                                                                                                                                                                                               |
| ------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| owner        | The hosting **NinjaScript** object which is calling the draw method. Typically will be the object which is calling the draw method (e.g., "this").                                                                                                        |
| tag          | A user defined unique id used to reference the draw object. For example, if you pass in a value of "myTag", each time this tag is used, the same draw object is modified. If unique tags are used each time, a new draw object will be created each time. |
| isAutoScale  | Determines if the draw object will be included in the y-axis scale.                                                                                                                                                                                       |
| startBarsAgo | The number of bars ago (x value) of the 1st anchor point.                                                                                                                                                                                                 |
| startTime    | The time of the 1st anchor point.                                                                                                                                                                                                                         |
| startY       | The y value of the 1st anchor point.                                                                                                                                                                                                                      |
| endBarsAgo   | The number of bars ago (x value) of the 2nd anchor point.                                                                                                                                                                                                 |
| endTime      | The time of the 2nd anchor point.                                                                                                                                                                                                                         |
| endY         | The y value of the 2nd anchor point.                                                                                                                                                                                                                      |
| textBarsAgo  | The number of bars ago (x value) of the 3rd anchor point.                                                                                                                                                                                                 |
| textTime     | The time of the 3rd anchor point.                                                                                                                                                                                                                         |
| textY        | The y value of the 3rd anchor point.                                                                                                                                                                                                                      |
| isGlobal     | Determines if the draw object will be global across all charts which match the instrument.                                                                                                                                                                |
| templateName | The name of the drawing tool template the object will use to determine various visual properties (empty string could be used to just use the UI default visuals instead).                                                                                 |

## Examples

```csharp
// Draws a ruler measuring the primary bar series
Draw.Ruler(this, "tag1", true, 4, Low[4], 3, High[3], 1, Low[1]);
```