Pitch is the distance from the crest of one thread to the next. Because the vast majority of screw threadforms are single-start threadforms, their lead and pitch are the same. Single-start means that there is only one ridge wrapped around the cylinder of the screw's body.
Definition of metropolis. 1  1 : the chief or capital city of a country, state, or region. 2  2 : the city or state of origin of a colony (as of ancient Greece) 3  3a : a city regarded as a center of a specified activity an industrial metropolis a cattle metropolisb : a large important city one of Europe's great metropolises.
The skyline and most of the notable landmarks in Metropolis are based on real-life landmarks in New York City. Metropolis is nicknamed The Big Apricot, just as New York City is nicknamed  The Big Apple .. Frank Miller has said that Metropolis is New York in the daytime; Gotham City is New York at night..he distance between the two cities has varied greatly over the years, ranging from being hundreds of miles apart to Gotham and Metropolis being twin cities on opposite sides of Delaware Bay, with Gotham City in the location of Cape May Point, New Jersey and Metropolis in the location of Lewes, Delaware.