# TUnitSystem enumeration

*No description yet.*

```csharp
public enum TUnitSystem
```

**Namespace:** SCH · **Assembly:** Altium.SDK.Interfaces

## Values

| Name | Value | Description |
| --- | --- | --- |
| `eImperial` | 0 |  |
| `eMetric` | 1 |  |

## Returned by

[ISch_Document.UnitSystem](https://altiumdeveloper.github.io/ad-sdk-docs/reference/sch/ISch_Document.md#unitsystem), [ISch_Preferences.DefaultUnitSystem](https://altiumdeveloper.github.io/ad-sdk-docs/reference/sch/ISch_Preferences.md#defaultunitsystem)

## Accepted by

[ISch_BasicContainer.Setstate_Default](https://altiumdeveloper.github.io/ad-sdk-docs/reference/sch/ISch_BasicContainer.md#setstate_default), [ISch_Preferences.GridPresetAt](https://altiumdeveloper.github.io/ad-sdk-docs/reference/sch/ISch_Preferences.md#gridpresetat), [ISch_Preferences.GridPresetsCount](https://altiumdeveloper.github.io/ad-sdk-docs/reference/sch/ISch_Preferences.md#gridpresetscount), [ISch_ServerInterface.SchObjectFactoryBySettings](https://altiumdeveloper.github.io/ad-sdk-docs/reference/sch/ISch_ServerInterface.md#schobjectfactorybysettings)