# Javascript: TXTextControl.RulerBarScaleUnit Enumeration

> Specifies whether a ruler bar shows cell references when the current input position is in a table cell.

- **Product:** DS Server
- **Section:** Reference
- **Kind:** Enumeration
- **Introduced:** 30.0
- **Path:** DS Server > Reference > JavaScript API > Javascript: TXTextControl.RulerBarScaleUnit Enumeration
- **333 words**
- **Web URL:** https://docs.textcontrol.com/ds-server/reference/javascript/txtextcontrol/rulerbarscaleunit-enumeration/
- **LLMs URL:** https://docs.textcontrol.com/ds-server/reference/javascript/txtextcontrol/rulerbarscaleunit-enumeration/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/ds-server/reference/javascript/txtextcontrol/rulerbarscaleunit-enumeration/llms-full.txt

---

### Description

Specifies whether a ruler bar shows cell references when the current input position is in a table cell.

### Members

| Member | Description |
|---|---|
| Auto | The ruler is automatically scaled in inch or in millimeter depending on the currently set culture. |
| Millimeter | The ruler bar is scaled in centimeter including millimeter marks. |
| Centimeter | The ruler bar is scaled in centimeter without millimeter marks. |
| Inch | The ruler bar is scaled in inch. |

### Examples

The following example uses `TXTextControl.RulerBarScaleUnit.Auto` (the ruler is automatically scaled in inch or in millimeter depending on the currently set culture.) in a document-editing workflow.

```javascript
function onTxError(error) {
    console.error("TX Text Control error:", error.msg);
    error.handled = true;
}

TXTextControl.rulerBar.setScaleUnit(
    TXTextControl.RulerBarScaleUnit.Auto,
    function() {
        console.log("set scale unit completed.");
    },
    onTxError
);
```

---

## Nearby

- **Previous:** [Javascript: TXTextControl.RulerBarFormulaMode Enumeration](https://docs.textcontrol.com/ds-server/reference/javascript/txtextcontrol/rulerbarformulamode-enumeration/llms-full.txt)
- **Next:** [Javascript: TXTextControl.save Method](https://docs.textcontrol.com/ds-server/reference/javascript/txtextcontrol/save-method/llms-full.txt)