atbetaflight/docs/Units.md

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# Units
This document describes the current variables used to configure specific elements depending on the measurement unit applied.
### Units
| Unit | Speed | Distance | Temperature |
| -------- | ----- | -------- | ----------- |
| Imperial | MPH | Miles | Fahrenheit |
| Metric | KPH | KM | Celcius |
| British | MPH | KM | Celcius |
### Affected OSD Elements
| OSD Element | Imperial | Metric | British |
| ---------------- | -------- | ------ | ------- |
| Altitude | Feet | Metre | Metre |
| GPS Speed | MPH | KPH | MPH |
| Home Distance | Feet | Metre | Metre |
| Numerical Vario | FTPS | MPS | MPS |
| Flight Distance | Feet | Metre | Metre |
| OSD Efficiency | Miles | KM | KM |
Note: Configuration is done in cli with `set osd_units = <UNIT>` or in the OSD tab in the Betaflight Configurator. For example `set osd_units = BRITISH`
### Affected FrSky Hub Telemetry Elements
| Element | Imperial | Metric | British |
| ------- | ---------- | ------- | ------- |
| HDOP | Fahrenheit | Celcius | Celcius |
The FrSky hub telemetry setting can be changed in cli by `set frsky_unit = <UNIT>`.
For example `set frsky_unit = METRIC`