2-point perspective trick

[coyotecraft]

Elastic string between your vanishing points. I've never seen this before. It looks so much easier than using a ruler.

 

[Xhukari]

That does look cool. Though I don't know how it isn't messing up the paper?... the board itself has holes in it too? That would be rather restricting wouldn't it?

 

[BizarreMonkey]

Looks pretty obnoxious to set up. :0

 

[coyotecraft]

The alternative is a bulky ruler that covers up the image, isn't anchored, and you have to flip around between points.
It's just tape and an elastic string that saves time making alignments.

 

[bacon]

Very cool technique