Use of this projection results in a conformal map of Alaska. It has little scale distortion as compared to other conformal projections. The method of projection is "modified planar. [It is] a sixth-order-equation modification of an oblique Stereographic conformal projection on the Clarke 1866 spheroid. The origin is at 64° N, 152° W" (Environmental Systems Research Institute, 1997).

Construction | Modified planar |

Property | Conformal |

Meridians | N/A |

Parallels | N/A |

Graticule spacing | N/A |

Linear scale | The minimum scale factor is 0.997 at roughly 62.5° N, 156° W. Scale increases outward from these coordinates. Most of Alaska and the Aleutian Islands (with the exception of the panhandle) is bounded by a line of true scale. The scale factor for Alaska is from 0.997 to 1.003. That is one quarter the range for a corresponding conic projection (Snyder, 1987). |

Uses | Mapping the complete state of Alaska on the Clarke 1866 spheroid or NAD27, but not with other datums and spheroids. Distortion increases as distance from Alaska increases. |