\u2018Maestro Pink\u2019 is a new variety of geranium having a compact habit, early and free flowering, very good outdoor performance, and brightly colored watermelon pink flowers. The pivotal levers are released after activation of the nozzles to permit appropriate movement for picking up, inspecting, orientating and locating electronic components on a substrate with the nozzles. An inner peripheral surface of the rubber member is held in contact with a part of the outer peripheral surface of the insulating sheath of the wire over an entire periphery thereof, while an outer peripheral surface of the rubber member is held in contact with an inner peripheral surface of a peripheral wall of the plug receiving chamber over an entire periphery thereof. A sigmoidal curve can be constructed from numerous mathematical functions, examples of which include polynomial, conic, transendental, or cumulative distribution curves.