Is there any mods like this?

I'm in the process of making a re-make of one of my favorite map from cs 1.6.

I have a long hallway and then it comes to a T into another one. I'd like to make sure it's exactly cut in half by the second hallway.

Is there any sort of plugin or what not I can install into hammer to achieve this?

Thanks Bunches.

 

No. But you can easily build the walls by hand. Selecting them will display their length and width.

 

It takes awhile to make it perfect, I was just looking for an easier route.

 

You do have a grid to work with. If things aren't snapping to it, you need to enable that.