Map Scale overlay aid

[Imp]

This is basically an overlay to be placed on real maps to help with scale. The attachment includes 2 sample picture of overlay in place at different zoom / scale levels
Will do another post with attachment containing 3 overlays called circles 50m 100m 200m these are pictures scaled for Google maps.
To Use
Load 50m circle mask in an art package copy to clipboard or however becomes a brush in your program.
Now load your map(s) & lay over it using paste from clipboard or brush.
Each circle is 50m or 1 hex.
In example picture 1 if look at scale in bottom left corner you can see circle is 50m & can now tell how far apart things like the hangers are.
Example picture 2 uses 100m scale with map rotated to line runway up with a hex row.
Also please note at a scale of 200m you can use the 50m + 100m overlays. A circle now represents 4 or 2 hexes wide

Problems
1) If using a different scale resize it remembering to lock the aspect ratio. Turn off anti aliasing & restrict colours to 2 if can or may lose transparency.
2) If background colour does not come up transparent for your maps change in your art package this is set up for Google maps.
Please don't ask me how to do this every program is different but roughly each map provider will likely use its own colour palette & you need to change the white colour to their default transparency. Once done should work with all that providers maps.
If somebody has a decent art package & can produce better ones please do mine is a rubbish freebie.