In the illustrated embodiment, the center support 70 also includes a second handle assembly 98 having two handle bars 102 extending outwardly from the center support 70. The second handle assembly 98 includes a frame 106 that supports the handle bars 102 above the drum 34. The second handle assembly 98 extends in a forward direction above the drum 34, with the handle bars 102 extending outwardly, towards respective wheels 82. Accordingly, the center support 70 includes the first handle assembly 90, which extends in a vertical direction (when oriented as shown in FIG. 2), and a second handle assembly 98, which extends in a horizontal direction (when oriented as shown in FIG. 2). However, in other embodiments, the second handle assembly 98 may be oriented in a different direction. For example, in some embodiments, the second handle assembly 98 may extend backwards, away from the drum 34.

The center support 70 also includes a mount 110 on the second handle assembly 98. The mount 110 can be used to support a monitor 114 (see, FIGS. 20-21), or other component of the pipeline assembly device. The mount 110 is supported on the frame 106 of the second handle assembly 98 in a position between the handle bars 102. In the illustrated embodiment, the mount 110 is a ball mount 110. The ball mount 110 creates a rotatable connection that allows the monitor 114 to be rotated in multiple directions. For example, the ball mount 110 allows for rotation in a swivel direction (e.g., left and right) and a tilt direction (i.e., up and down).