HHIP-3901-0078 Adjustable Screw Jacks (Various Adjustable Ranges 23-30mm to 100 to 140mm)

I needed a small jack to support the center of a very long couch which I raised with bed lifts. The center support leg wouldn’t reach the floor anymore and this turned out to be the perfect solution to extend the support leg. The thumb wheel to set jack height was adjustable while the couch was putting its load on the jack, which meant no additional time was spent measuring the gap and testing iteratively.

Works like it should

I bought a few sets of these things and they're real simple machinist jacks that could be made at home. My only complaint was that the threading on all but one of them was very loose. Also for such a small increment of movement it would have been a lot nicer if they were fine thread vs the course the manufacturer used. But they were cheap and did what I needed.

I am happy with them. I got a pair. Use them once and they hold the piece fine. Easy to setup because their low profile.

Comes packed and sealed in oil

Well made and works great

I use them for leveling objects, which requires at least two, and three if you want to adjust the height. Excellent stability and accuracy

I use it when installing machinery to hold the weight of the equipment while I adjust the leveling pads. It's perfect for this

fonctionne très bien et s'ajuste a l'infinie dans la gamme précisée