The original jacks should be called suicide jacks, they are the same with all Italian cars in my experience ....deadly!
That made me laugh out loud, as that's what a friend and I called the jack supplied with each FIAT Uno. It's basically half a scissor jack, with a nifty folding base, unconstrained by any obligations of symmetry. Pick an angle and hope the vectors resolve to a vertical.
One day we were fitting an engine to one of our six Unos we had at the time, and so the trolley jack(s) were in use. Can't quite remember why but we ended up using two suicide jacks, one each side... it became a race to see who could wind up the knuckle-scraping handle fastest... James won, his side went up first, so the whole shebang flopped over towards me as both jacks folded - I fell backwards into the garden... hilarious
we had to start all over again, which we did...
Another time I remember the jack going up but the Uno not rising... the little pile of rust flakes was a clue. I lifted the carpet and found the floor wasn't connected to the buckled sill.
We found that using three jacks on one side (we had nine of the *******s) helped to avoid buckling the sill. A trolley jack was no use as there wasn't room to get an axle stand beside it.
I noticed that my Spider's jack is very solid and stable in comparison, it rises straight up as it is a full-scissor design, nicely symmetric. You can use a ratchet handle on it, too. Until you've experienced an Uno jack, you haven't lived
It would be nice if someone could invent the hydraulic scissor axle stand, as then all problems would be solved 'contemporaneously' (as the handbook would say).
I have to use the Spider's jack as neither of my trolley jacks will fit underneath and if they did, there wouldn't be room for the axle stands. An air-powered ratchet speeds up the standard jack quite well, and provides that pit-lane-style orgy of noise and power, but it's worth greasing the threads first.