This feature enables calibrating an image of map and placing it over the active map. For example when you go to the ZOO or a park simply take a picture of its detailed plan displayed on a board at the entrance. After that you can calibrate the photo according to your background map a use it for your further navigation. This option is available only to Locus Map Pro users.

• open the function in Menu > More functions > On-board Map Calibrator, a dialog appears
• tap Take to take a photo with you phone camera - the more quality camera, the better
• or Select to choose the photo from your device photo folder.

• tap Add and choose a distinct point (a hill summit, crossroads etc.) on your picture
• tap in Map coordinates menu and choose the same point on your background map
• repeat this procedure 4 times - try to select points making a square. You can edit their positions by tapping or remove them.

• when you are ready with your four points the status line turns green and the Compute button activates
• calibration points overview appears - indicates their deviation. When it is not large you can name the new map and proceed to its rendering

Your calibrated map appears now as an overlay and can be (de)selected in Data manager > Items