Anyone could help with pixel scaling?

[Da_Lunge_Fish]

So, could anyone please help me with pixel scaling here? I just have no programs for that. Could anyone please calc the distance this guy spun here It's for a speed feat, and one person recommended me to pixel scale the distance

 

[KLOL506]

Use MS Paint. Works handy.

 

[Ari64-SP]

What I do... (I’m on windows btw)
1. Find scan
2. Take screenshot
3. Click popup
4. Mark up your screen shot with lines
5. Use this

 

[Da_Lunge_Fish]

What I do... (I’m on windows btw)
1. Find scan
2. Take screenshot
3. Click popup
4. Mark up your screen shot with lines
5. Use this

I'm on mac

 

[Cul0r]

paint works

 

[KLOL506]

I'm on mac

oh ****, then I got no idea.

 

[KingTempest]

I'm on mac

I use gimp for all my calcs