Samsung Galaxy S10e User Manual page 54

Getting started
• Surface level: Use the device to determine if a surface is level by placing the
device on the surface. The surface is level when the x and y values are close
to or equal to zero degrees.
– Tap Calibrate to calibrate the level.
• Ruler: Use the edge of the device as a ruler to measure a straight line in
either inches or centimeters. Tap the unit name to change the units.
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