Astronomical calendar clock; eight-day movement with two trains, for going and striking, both with fusee; dead beat escapement with inverted crutch piece, pendulum suspended from vertical steel loop; striking-train with inside count-wheel; back plate engraved with foliate border, scrolling foliage, birds and a mask; dial constructed from several fixed sections of brass and copper, with idle subsidiary corner dials and a nest of rings at centre, some rotating, some fixed; give multiple ...
Norsemen made skilled astronomical observations, keeping the calendar synchronized with the motions of the stars according to the Ljósvetninga Saga. Several of the earliest surviving Icelandic textbooks cover astronomy. By the beginning of the 12th century, Stjörnu-Oddi Helgason (Star-Oddi) had created Oddatala, detailed charts of the sun's altitude at noon and its bearing at sunrise and sunset for every day of the year in Iceland.
Astronomical compendium consisting of a box with three compartments. In the first, there is an astrolabe and a lunar calendar. Between the first and second compartment is an hour circle. The second compartment houses a sundial and a magnetic compass for orientation. The third compartment contains the Horae planetarum table and an horary quadrant with a shadow square. The markings are in German.
America's Stonehenge - Sacrificial Stone "America's Stonehenge" - A maze of man-made chambers, walls and ceremonial meeting places, America's Stonehenge is most likely the oldest man-made construction in the United States (over 4000 years old). It has been determined that the site is an accurate astronomical calendar. It was the inspiration for H.P. Lovecraft's "The Dunwich Horror" North Salem, NH