The Millard Towers Tilt Tower is made of lightweight, high-grade aluminum alloy and is suitable for the most extreme environmental conditions, including high wind, ice, UV, and saltwater exposure. The cross-bracing uses a zigzag design of continuous, solid aluminum alloy rods.
The tower consists of four 2.25 m [7.38 ft] sections and a circular pole that extends 60–940 mm [2.4"–37"] above the top of the tower. The tower sections are painted in seven bands of orange and white. The hinge point at the top of the first section is operated mechanically using a worm gear winch (self-locking) and tilt tube. A winch is fastened to the tower using three wing nuts and allows the tower to be lowered or raised at the hinge point. Both the winch and the tilt tube are removable, allowing them to be used and stored when not in use. This makes it practical to assemble the tower close to ground level and to access the sensors at the top by lowering or raising the tower, enabling a single person to service the equipment easily without climbing the tower or using a bucket truck.
The Tilt Tower is engineered to withstand winds with a safety factor of 1.5. Table 1 shows the design wind and ice loads for an equipment effective projected area of 0.6 m² [6.45 ft²]. Up to 14 kg may be installed at the top of the tower.