# `GSFont.gridMain`

*Instance Property*

Main grid spacing used for rounding coordinates.

## Declaration

```swift
var gridMain: UInt32 { get set }
```

```objc
@property (nonatomic, assign) uint32_t gridMain;
```

```python
gridMain() -> int
setGridMain_(gridMain: int)
```

## Discussion

A value of `0` disables coordinate rounding. Values of `1` and higher round coordinates to the effective grid length.

## See Also

### Grid

- [`GSFont.gridSubDivision`](/Core/GlyphsCore/GSFont/gridSubDivision) — Subdivision applied to the main grid spacing.
- [`GSFont gridLength`](/Core/GlyphsCore/GSFont/gridLength) — Effective grid length used for rounding coordinates.
- [`GSFont.gridMainStore`](/Core/GlyphsCore/GSFont/gridMainStore) — Stored main grid spacing.
- [`GSFont.gridSubDivisionStore`](/Core/GlyphsCore/GSFont/gridSubDivisionStore) — Stored grid subdivision.