There is described an extending jack plate, comprising several components, in combination. Contact holes each for connecting common wiring and a common electrode together are not formed for all the pixels, but decimated so as to be arranged in zigzags. The nanometric particles are suitable useful in the field of chemical catalysis, particularly for petroleum refining when in porous form, and as sensors, optical wave guides, and coatings. One or more points of attachment are formed on the hinge body. The invention provides a method for parking time estimations, the method comprising detecting beginning of searching for a parking spot by a user of a device able to sense at least momentary location and respective time; detecting time of parking; and calculating at least estimated duration of searching for a parking spot.