A window covering device has a top elongated member, a middle elongated member, and a bottom elongated member. The optical assembly has a targeting marker in the path of a penetrating beam emitted by the source. and high strength and elasticity.
Algorithmically generated prior art
A window covering device has a top elongated member, a middle elongated member, and a bottom elongated member. The optical assembly has a targeting marker in the path of a penetrating beam emitted by the source. and high strength and elasticity.