It would be nice to know if this is a destructive or non-destructive test. Lack of candor implies it is destructive.

Tom

Why does it matter if they buy it and use it however they wish? Is there a backstory justifying the judgmental criticism of the OP's post?

Although I agree with the other poster, it's confusing what size is being looked for. Maybe use metric and avoid translation issues? 3-5m wingspans are not going to be found in the full-scale category.