Ruler A ruler is a widget that displays a ruler with a given distance in cm or inches Overview A ruler is a widget that displays a ruler with a given distance in cm or inches Ruler.real create an in real life ruler equivalent to real cm or inches Ruler.count(10.cm), Ruler.count fit the given distance to the width Ruler.count(10.cm), Ruler.dynamic is used to display a ruler with a fixed width in pixels for notch Ruler.dynamic(300.cm), Double-sided ruler DynamicDoubleSidedRuler( cmWidth: 100, child: Container(color: Colors.red, height: 100, width: 100), ); Table of contents Image Code description Ruler.count(3.cm), Ruler.count fit the given distance to the width Ruler.dynamic(300.cm) Ruler.dynamic is used to display a ruler with a fixed width in pixels for notch Ruler.count(1.cm) Ruler.real create an in real life ruler equivalent to real cm or inches Ruler.count(1.cm, notchColor: Colors.black) Change color notches color Ruler.count(1.cm, axis: Axis.vertical) Change axis to vertical or horizontal