Another option to consider world be engine hoist and a pallet jack. The combination is probably not as expensive as a pallet stacker and much easier to store. I have moved everything in my shop with that combination. I never liked moving things with an engine hoist (not even engines), they are just too wobbly. Pallet jack allows you to keep the load close to the ground, you know, not as far to fall! You can position the piece with the pallet jack, then lift it just enough to remove the jack and set it in place.
I have also used a set of 3/4" black pipe rollers, 5 or 6 pieces 36" long, to move machines. It is amazing how easy and fast you can move a Bridgeport across a shop that way.
I have also used a set of 3/4" black pipe rollers, 5 or 6 pieces 36" long, to move machines. It is amazing how easy and fast you can move a Bridgeport across a shop that way.