No, none of this stuff,.... was ball shaped, ornate looking and the outside person could see gearing in it, with some access panels removed.Was more similar to a clock than anything else. There are only two was one can time travel in more common technologies of the past. The first one was planned magnets based on high rev. gears, which would pot the spacetime around the Chronovisor, and this would open a hole in spacetime, so that time travel device could travel. There is supposedly an operator's console inside of this device, which allows forwards or backwards travel.Do not know the date that they got this running, however very prominent scientist, inventors and tinkerers, helped design and build this device, as popes and cardinals wanted to know both past and future.There is a telling that this device was used to go all the way back to Christ's time, but it is not known as to whether the non-interfeanace protocols were enforced or used.Take a look to the wall behind the altar. It's possibile to "read" the wall and the symbols in a vertical way or in a horizontal way.
Horizontal
At the top (first level) to angels with sudarium and sword (symbol of dead and pain the first and symbol of war, combativness and regality the latter) and in the middle a vary bright window (the beginning point, from which two columns of symbols start).
Second level (going down from the top): two angels with a whip (symbol of purification) and a cup (the graal, a symbol that doesn't need explenation).
Third level: two figure, maybe St. Johan the Evangelist and St. Mary (which Mary is hard to say). The left statue has the arms crossed on the chest, symbol of dead (think about the ancient egypt mummy and the position of the arms in the sarcophagus), of rebirth through dead and of esoteric practice (stylised serpents of the Caduceus). The right statue has one hand up and the other one down, like in some Hermes Trismegistus pictures (citing the Emerald Tablet: what which is below is like that which is above & that which is above is like that which is below to do the miracles of one only thing) or in the Baphomet pictures.
Fourth level: the two famous angels, one dressed in pink and the other one in blue. One looks up and the other down.
At the end the two columns unite in one point... the Tabernacle, the point where the Eucharist is reserved. Eucharist that is the Body of Christ and... pay attention to the Tabernacle, there are two heads of two children just above it... for who has read all the Little Doctor story... the symbol of the two twins connceted maybe with Magdalena.
Vertical
On the left side (the right one for those looking from the front), there is the Energy of the God / Christ regality descending: sword, the cup, the two hands in the symbol "above is like below", the angel looking down (that is energy descending, the way that divine energy used to go down from the high spheres to our material world) and at the end the Tabernacle with the twins.
On the right side there is the way proposed to go back to the sky, starting from Tabernacle and the twins, going through symbol of esoteric practice, life through death, sacrifice of oneself and the symbol of passion and transfiguration... the sudarium.
Mjölnior, the cemetery, you forgot to finish the story of the encounter with the cat, thank you.