Ok here is the scales I made last night.
As you can see the verticals are correct
The horizontals look way off
What to do - what to do.
Is it possible that the horizonal should count for x2 - so mark at 20 - this would show them to be wrong.
If I change the 20 to match the 5.71, will that show the correct ship length. Does not look like it (I will try and test)
If it does not work - does this mean that the range is way off.
I was very careful when marking (the presice mid point from ruler changing from 1050m to 950m)
Suggestions anyone.