Abstract: Each of an array of holes for accepting insertion of push-pins, as in pinboards, connectors, etc. for multistrand electrical and/or optical assemblies, is covered with a pin-penetrative membrane area having a hole-identifying marking thereon. Each such hole-covering membrane area preferably has either a see-through characteristic or suitable marking to enable locating and/or determining the size and shape of the respective membrane-covered hole. The respective push-pins with wires or light pipes attached, as the case may be, are punched through the numbered areas of the membrane into the holes for assembly of the pinboard, connector, or other push-pin-utilizing component.

Abstract: First and second work-engaging members grip an elongated member normal to its major axis while a third work-engaging member moves an element axially along the elongated member. The first and second work-engaging members are on first and second levers which rotate in a first plane and the third work-engaging member is on a lever pivotally connected to the first and second levers for rotation in a second plane substantially normal to the first plane.

Abstract: A hand tool which can be conveniently used with the staples used to fasten an electrical wire to a supporting structure. The hand tool comprises two lever arms which are pivotally joined at a point intermediate to their respective distal and proximal ends. The proximal end portions of the lever members are formed into handles while the distal portions are shaped into a pair of coacting jaw members. The jaw members are contoured so as to enable them to fit the contour of the staples so as to provide convenience in removal of the staples. The jaw members are also machined to enable cutting of the electrical wire during installation. Removal of staples is further facilitated by mounting a fulcrum member on one of the jaws. A hammerhead is mounted on the opposite jaw and is sized to allow the simultaneous striking of both nails generally required for hammering a staple into place.