Originally Posted by nealtw
Yeah, I ran the numbers after I posted that.
It brings up the question whether anyone makes jacks run by motors through a gear train that runs day and night at the extremely slow speeds you posted.
That way the OP just sets it up and monitors the building once or twice per day, for what might take a month.
And the low power means the whole setup could be run by batteries. I think I'll start hiring illegals to produce this thing.