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POLYHEDRAL PILLAR DIAL - Polyhedral, or multi-face dials, are dials with two or more faces inscribed
with hour lines. A common form is the cube dial. Combination dials such as horizontal-polar-equatorial, or horizontal-vertical-equatorial,
belong in this class, as do the complicated polyhedral dials with many faces, that are found in Scotland, and that
are so typical of the Renaissance period.
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