Query: screw jack
Ellis Manufacturing Company Mini Screw Jack - Adjustable Support Jack - Range of Adjustment 2.5" - Safe Load Capacity (15,000 lbs)
Pro Series by HHIP 3901-0072 Adjustable Screw Jack, 2.2"
Ellis Manufacturing Company 4x4 Screw Jack - Adjustable Support - Safe Load Capacity (15,000 lbs) - Painted Finish
Starrett 166C Pin Vise Tool – Holds Drills, Wires, Jewelry, Taps Up to 0.050 - 0.125" (3.21mm) with Insulated Octagonal Handle for Shock Protection, Tapered Collet
JET SJ-5T 5-Ton Screw Jack
Starrett 191A Little Giant Jack