Step 1: Parts
see the parts list in the image above, and read on to see how they're used.
Step 2: The Boom Arm
These fittings allow you to slip a piece of PVC pipe (we'll use 1/2 inch) right through the top of the tee. On either end, there's a sort of cap that screws on and off, and inside that cap is a little rubber ring. As you screw the cap tighter, it compresses the rubber ring around the pipe and holds it in place. We'll be using these to adjust our boom arm.
Ready for step one, now?
First you'll want to remove the rubber ring from one end of each tee - this way, you'll only need to tighten and loosen one cap in order to make adjustments. So remove the ring at one end, loosen up the other end, and slip your PVC segments into each tee.
move on to step 3 to see how we finish the arm.