Phoenomena solis a luna tecti lunae per umbram telluris obscuratae

The page features two scientific diagrams, likely representing components of an astronomical instrument or celestial bodies. On the left, there is a large circle containing the letter L in the upper center. A horizontal line serves as a diameter and a graduated scale. The left end of this line is labeled East original: "Ort." and the right end is labeled West original: "Occ.". The scale is marked with small vertical ticks and labeled with the numbers 10, 20, 30, and 40 moving outwards from the center in both directions. On the right is a diagram composed of seven concentric circles. The letter S is inscribed in the upper portion of the circles. A long, tapering handle or pointer extends from the bottom-left edge of the circular assembly. This handle is marked with the letter A near its attachment point and the letter B at its narrow, notched end.