Scale problem, map creation with Oruxdesktop

I use SnapToMap to create bmp screen map images of Swiss topo maps from the wanderland site. I open and save the image as jpg to save space. Then I convert and calibrate the map with Orux desktop, it's easy, at maximum zoom grid intersections are 400px and/or 1000m apart. So it's straight forward to use four points on a diagonal. I use CH-1903 projection and Swiss grid datum. However the map shows bad on my phone, the green scale line indicates 20km instead of 20m expected. I've done (or redone) four maps these days and I cannot find the problem, any ideas please?

rooman wrote:I use SnapToMap to create bmp screen map images of Swiss topo maps from the wanderland site. I open and save the image as jpg to save space. Then I convert and calibrate the map with Orux desktop, it's easy, at maximum zoom grid intersections are 400px and/or 1000m apart. So it's straight forward to use four points on a diagonal. I use CH-1903 projection and Swiss grid datum. However the map shows bad on my phone, the green scale line indicates 20km instead of 20m expected. I've done (or redone) four maps these days and I cannot find the problem, any ideas please?

Hi;

send me one image + the coordinates you introduced in OMD to calibrate that map --> oruxuro@gmail.com

orux