The ancient sundials of Scotland can be grouped into three main styles: lectern, obelisk and facet-head.
The lectern usually has hollow dials on the south, east and west faces, and hour lines are inscribed in every available angle.
This is particularly true of the Netherlands which was Scotland's primary trading partner of the time and where several lectern dials survive.
In these panels are often sunken dials of bowl-hollows, hearts or triangular and rectangular shapes.
This term includes a wide variety of other types ranging from a simple cube to complex polyhedrals.