Origin of polyconic
Examples from the Web for polyconic
Historical Examples of polyconic
So far the construction is the same for both forms of polyconic.
These conditions are substantially fulfilled by several projections, of which the polyconic is used in the United States.
The polyconic projection is not used for very extensive areas of the earth's surface, as for instance a hemisphere.
On polyconic and other larger scale charts distances are measured from the scales printed on the chart.
The polyconic projection (see fig. 5) is used for most Government maps.