This is a demo tutorial. While there is no step-by-step commentary available (yet), the live demo below is fully functional. Feel free to open it for full source code.
This demo shows how we can customize GaugeChart hand by pushing literally any element into it, e.g. Triangle to replace the tip an and SVG Image to replace pin.
See the Pen amCharts 4: Customizing ClockHand by amCharts team (@amcharts) on CodePen.24419