Help ID'ing the size of truss?

Hi all i was designing a show and i need to rent a circular truss, i have come across this image:

https://farm4.staticflickr.com/3936/15460259170_68f4725541_b.jpg

and i was wondering would anyone be able to guess what size the 2nd largest truss is in this picture?


Thank in advance

12"x12". Or did you mean diameter?

derekleffew said:

12"x12". Or did you mean diameter?

Click to expand...

I mean diameter, sorry for not clarifying that

It's 12" x 12" x 19'-8"

I did a reverse image search and found this site, the truss is listed on that page. If you search that page for "27th May 2013" you'll find the post.
http://pipelinenewsletter.blogspot.com/

techieman33 said:

It's 12" x 12" x 19'-8"

I did a reverse image search and found this site, the truss is listed on that page. If you search that page for "27th May 2013" you'll find the post.
http://pipelinenewsletter.blogspot.com/

Click to expand...

Awesome thank you for your help!!