The 35E plumbizer is designed for signal mounting mid-mast arm, end of mast arm or on the pole.  It uses a ball and socket mounting point for easy leveling adjustment to ensure your signals are plumb and level. Mounting the signal heads is easy with just a washer and locking nut.  The plumbizer is bolted tightly and does not use set screws for adjustment making it almost maintenance free.  Pedestrian signals can also be mounted to the 35E which will allow the traffic signals and pedestrian heads to be aligned with each other on the pole while maintaining the ability to aim the signals in the appropriate directions.