Anda boleh menarik skala bulatan.
You can draw circle scale it's like the face of a timepiece.
I make a jog dial image in tuning fork application.
https://play.google.com/store/apps/details?id=asia.remix.tuningforkfree
You watch video, you can skip AD x 20.
App has fuctions change Lines, Line Color, Line Width, Line Length, Back Ground Color.