1 Observatory
2 Roof Off
3 Foundation
4 Flooring
5 Wall Framing
6 Roof Truss
7 Pipe and Angle
8 Wheel and Pipe
9 Partially Open
10 Soffit
11 Wheel
12 Looking East
of 12
The pipes that support the roof truss roll on 6" diameter wheels mounted within the wall.
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