serve as handles for lifting and maneuvering individual arm sections 28 as well as maneuvering the entire arm 20 during filming the leveling system is next to the box section and in between the left side outer beams in this position the leveling system i e the leveling rods and their supports and attachments is shielded from damage and abuse e g dropping arm sections allows for a more compact design and is out of the way during use in addition as the leveling system is well inside of the envelope 79 the outer beams may be grasped and used as handles away from any potential pinch points to lock the arm 20 against vertical movement i e pivoting movement about the tilt axle 130 the tilt brake knob 132 is turned causing the tilt axle 130 to act as a draw bar and being secured by the axle bolt 156 correspondingly the upper arms 141 and 143 of the frame 130 are moved slightly towards each other clamping the right spindle 142 against the inner teflon washer 140 and the upper arm 143 and at the same clamping the left side of the box section 120 against the disk washer 148 and the leveling rod disk 146 to the point where friction smoothly resists pivoting movement when the tilt brake knob 132 is backed off the clamping force on the frame section 28 is released and the low.