ropes
The Hebrew University got a PDP11/70 delivered, late on a Friday, on a pickup truck. They told us "600Kg, 6 packages". Turned out one package (the 11/70) was 500Kg.
We (the CS department) got it off the truck by tying ropes from it to a higher floor, letting the truck move, and putting a table to stop if moving (said table became matchwood). Let it there until Sunday, when the staff came in.
11/70 worked like a charm