1948, Poland - Jędrzejów
The Nicolaus Copernicus Museum in Frombork, MF/As/3
Fair tree wood, 191 x 79 x 79 cm
It is constructed of six rings placed on the supporting pillar with the cross footing. The most outer ring representing celestial meridian, is mounted in the groove of the supporting element of the pillar which allows for its longitudinal movement. This makes possible positioning of the axe which is fixed into it around which the other rings are turning at an angle equal of a longitude of the observation place. The other rings are ecliptic with the signs of the zodiac and the rings perpendicular to it.

1977, Poland - Gdańsk
The Nicolaus Copernicus Museum in Frombork, MF/As/10
Wood
As above

1948, Poland - Jędrzejów
The Nicolaus Copernicus Museum in Frombork, MF/As/2
Fair tree wood, 366 x 272 x 116 cm
The three wooden battens fixed with the bolts in such a way that they form the isosceles triangle. At the one of the battens two steel sight vanes are mounted, the scale on the second batten, the third batten to which two others are joined in mobile way is connected by hinged joint to the supporting pillar with cross footing what allows for rotation of the battens around the pillar.

1948, Poland - Jędrzejów
The Nicolaus Copernicus Museum in Frombork, MF/As/ 1
Fair tree wood, 195 x 175 x 62 cm
The wooden board with the drawing of a quadrant on the one side of the board. On the circle the scale is marked with the range 0o to 90o with the 10' spaces. In the centre of the circle a treenail is placed. The board is standing in vertical position and is supported by a treenail on the one side and by the support perpendicular to it on the other one.