For the park, see Washington Square (Philadelphia). Washington Square West is a neighborhood in downtown, or Center City, Philadelphia, Pennsylvania.
Electric Door Strike (image from bigasterisk.com) A better solution for door security hardware during a power outage is to use electric strikes. An electric strike is a mechanically operated strike that releases a door when the mechanical part is activated.
Electric Hammer Chisel - Flat (Cold) Chisel. Electric Hammer Flat Chisels are designed for edging, chipping, scaling or channeling concrete, masonry or brick. They are also known as Electric Hammer Cold Chisels. Electric Hammer Chisel - Scaling Chisel. Electric Hammer Scaling Chisels are designed for removing scale, rust, concrete and weld spatter.