Xerox Phaser 3635MFP/S User Manual page 176

11 Setups
Set Measurements
Set Altitude
170
Tools > Device Settings > General > GMT Offset
The measurements that are displayed on the touch screen can be set to either
inches or mm. You can also set the decimal point (Numeric Separator) to
either a period (e.g. 12.3) or a comma (e.g. 12,3).
Tools > User Interface > General > Measurements
The xerographic process used in your machine to make prints is affected by
air pressure. Air pressure is determined by the height of the machine above
Xerox Phaser 3635MFP User Guide