# `meter`

```strand
element meter(float -> value): node
```

A bar filled to its value: `meter level`, `meter memory.used {
range: 0, memory.total }`. Laid out taller than wide (`width: 6;
height: 80`), it fills upward from the bottom, without its `wave`.

It takes no children.

Also every prop and event of [`node`](/reference/elements/node.html.md).

| Prop | Type | |
| --- | --- | --- |
| `value` | `float` | How full it is, in `range` (0 to 1 when unset); a value outside it is drawn at its nearer end. |
| `range` | `(float \| auto, float \| auto) \| auto` | The values its ends stand for: `range: 0, 100`; `auto` (or `auto` for one end, `range: 0, auto`) follows the values it showed in the last minute, on a 1, 2, 5 ladder (0 to 1 when unset); it moves when the meter draws, so it narrows at the first change after a burst is a minute old. |
| `track` | `paint` | The paint of the unfilled part. |
| `wave` | `float` | A wavy fill's amplitude; 0 is flat: `wave: media.playing ? 3 : 0`. |