Lets say it were even US nautical miles. It gives about 40 km. Let's assume you are neither lying nor trolling (but I suspect you are rather troll than so big idiot): the difference would be about 36 cm (~14,18 inch !)

As I am engineer with a degree I know something about lasers. You probably wouldn't afford to buy high coherence laser which would be coherent enough on the distance of 40 km to measure such thing ! And you didn't bought it - you just said "laser pointer" ! Laser pointers are at best coherent over 100m, maybe few hundred meters at mximum - so much less than on mile ! Not to mention keeping laser pointer in hand (fuck - even if it would be laser level which are useful in building buildings not scientific measurements) wouldn't allow to even get ideal horizontal position to measure anything. More than 1 km and that "laser beam" would be like flash-light (still maybe dangerous) rather,so forget exact results. Your "measurement" was completely shitty.

And my answer is rather not for you,because you are stubborn idiot or troll.

Lets say it were even US nautical miles. It gives about 40 km. Let's assume you are neither lying nor trolling (but I suspect you are rather troll than so big idiot): the difference would be about 36 cm (~14,18 inch !)

As I am engineer with a degree I know something about lasers. You probably wouldn't afford to buy high coherence laser which would be coherent enough on the distance of 40 km to measure such thing ! And you didn't bought it - you just said "laser pointer" ! Laser pointers are at best coherent over 100m, maybe few hundred meters at best - so much less than on mile ! Not to mention keeping laser pointer in hand (fuck - even if it would be laser level which are useful in building buildings not scientific measurements) wouldn't allow to even get ideal horizontal position to measure anything.

And my answer is rather not for you,because you are stubborn idiot or troll.