US Patent 11686567 Handrail installation device

A handrail installation device, including a first arm removably connected to at least a portion of a stair tread, a second arm pivotally disposed at a first end on at least a portion of the first arm to rotate from retracted in parallel with the first arm in a first position to at least partially extended away from the first arm in a second position, and rotate from extended away from the first arm in the second position to retracted in parallel with the first arm in the first position, and a bubble level disposed on at least a portion of the second arm to identify a level surface based on a position of at least one of the first arm and the second arm.