A cylindrical projection on a crank which holds the connecting rod. |

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A cylindrical projection on a crank which holds the connecting rod. |

## Related Terms |

## RECTANGULAR PROJECTIONA cylindrical map projection with uniform spacing of the parallels. This projection is used for the star chart in the Air Almanac. |

## CYLINDRICAL CHARTA chart on a cylindrical map projection |

## PERSPECTIVE MAP PROJECTION UPON A TANGENT CYLINDERA cylindrical map projection upon a cylinder tangent to the ellipsoid produced by perspective projection from the ellipsoid’s center. The geographic meridians are represented by a family of equally spaced parallel straight lines, perpendicular to a second family of parallel straight lines which represent the geographic parallels of latitude. The spacing, with respect to the equator of the lines which represent the parallels of latitude, increases as the tangent function of the latitude; the line representing 90° latitude is at an infinite distance from the line which represents the equator. Not to be confused with MERCATOR MAP PROJECTION to which it bears a general resemblance. |

## TRANSVERSE MERCATOR MAP PROJECTIONA conformal cylindrical map projection, being in principle equivalent to the regular Mercator map projection turned (transversed) 90° in azimuth. In this projection, the central meridian is represented by a straight line, corresponding to the line which represents the equator on the regular Mercator projection. Neither the geographic meridians (except the central meridian) nor the geodetic parallels (except the equator) are represented by straight lines. Also called INVERSE MERCATOR MAP PROJECTION, TRANSVERSE CYLINDRICAL ORTHOMORPHIC MAP PROJECTION, INVERSE CYLINDRICAL ORTHOMORPHIC MAP PROJECTION. |

## OBLIQUE MERCATOR MAP PROJECTIONA conformal cylindrical map projection in which points on the surface of a sphere or spheroid, such as the earth, are developed by Mercator principles on a cylinder tangent along an oblique great circle. Also called OBLIQUE CYLINDRICAL ORTHOMORPHIC MAP PROJECTION. |

## HYDRAULIC CYLINDERA hydraulic actuator of linear type. Consists of sealed cylindrical body with oil admission ports and piston connected to actuating rod. Direction of linear piston & rod movement depends on which side of piston working fluid supplied. |

## SHELLThe cylindrical portion of a pressure vessel. |

## BARRELThe cylindrical portion of a firetube boiler shell that surrounds the tubes. |

## ANNULAR BEARINGUsually a rolling bearing of short cylindrical form supporting a shaft carrying a radial load. |

## BOILER DRUMA cylindrical shell closed at both ends, designed to withstand internal pressure. |

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