| 摘要 |
A flat plate grips a roof and has an opening to admit up to a double fly ladder. Opposite the opening, the plate has a plurality of slots in at least two ranks for adjusting the position of the plate relative to a gable. The underside of the plate has a roof engaging surface to reduce slippage of the plate. The plate can be carried in vehicles and readily lifted to the height of a roof. The plate also includes slots extending parallel to the length of the plate, a tread pattern upon the top surface of the plate, sizing to fit within corrugations of metal roofing, and hand holes for transport and emergency grasping.
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