# Units

![](/files/-M6rWz-1tj2js2ZSX1DK)

### Primary Grid Size

This is the measurement between the thicker grid lines. You can select `Inch` or `Centimeter`.

### Secondary Divisions

This is the number of smaller cells within the grid. The options are `2`, `4`, `5`, `8`, `10`, or `12`.

### Tooltip Units

This is for the coordinates that show up near the cursor when drawing. Whether they use the `Primary` grid size, `Secondary` divisions, or `Combined`. For example on an eighth inch grid should a line that crosses twelve cells show `1.5`, `12`, or `1' 4"` for the length.

### Tooltip Fractions

This setting combines with the previous one. It is to show the fractional part of coordinates in `Decimal` or `Fractional`. For example `1.5` or `1 1/2`. Also affects `45.5°` or `45° 30'` for degrees.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://chrispalmeri.gitbook.io/really-sketch/options/units.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.