because when other golfers are putting if they hit your ball its a penalty stroke against the person whos the ball belongs to Also a lot of golfers will mark with a straight lie or dot so they can line up the ball more accurately for tee shots and putting. It makes it easier to see the line of travel for your club.
Basically, anything flat. Many golfers use a coin.
Once you are on the putting surface i.e the green, you are permitted to mark your ball, clean it and replace it.
If they are that close most rules officials will allow one of the golfers to mark his ball to let one of the two golfers hit his/her ball then allow the person who marked their ball to hit.
A marker is a specially made piece of plastic or metal which is usually circular and sometimes coloured or personalised. It is used by golfers on the green to mark the position of their ball, they do so to allow them to clean their ball before putting or get their ball out of another players line. To mark the ball you place the marker directly behind the ball and pick the ball up, it is also best to tap it down a bit, then when it is your turn to putt you simply place the edge of the ball at the edge of the marker and lift it. You can also use tees or coins as markers.
The pros are usually aligning the markings on their ball with the intended target line. This might be the brand mark on the ball, or a line that's been drawn on, or maybe it's a balance indicator. To do this legally, they have to mark the position of the ball first, then align it, then remove the marker.
Play the ball as it lies, you are only allowed to mark and clean your ball when you are on the putting surface (green). You would receive a two shot penalty if you cleaned your ball.
As long as the ball isn't in motion and it is on the green, you can mark its position and wait your turn to play.
Actually yes you can it depends were your ball lands on the green
Yes you can mark a ball anywhere except in a sandtrap
Not exactly. If his mark would be in your path, he can use any measuring device, (standardly his club length) to make the mark out of your line, and replace it to where it should be before he puts. He has the right to pick up his ball. AlthoughI guess you can always ask!
yes you can