The problem with this is the white area inside the circle
surrounding the cross hair obscures the chart as you hover over an area....and the cross hair is too fat....the graphics on this could definitely be improved.
A better way to do this would be to have a clean circle without the white area inside so one could see the chart inside the circle & also with a clean narrow cross hair inside so one could precisely locate the tool where desired on the chart.
Maybe take a look at the zoom tool in Tradestation...with the TS tool can locate the tool cross hair with precision on the chart.
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