ME 650 Duplex Screw Jack
Wall-mounted, to determine and compare efficiencies of square and Vee threads of the same pitch. Vertical spindle with square and Vee threads, load yoke, load spreader, hanger, load cord, weights set.
Wall-mounted, to determine and compare efficiencies of square and Vee threads of the same pitch. Vertical spindle with square and Vee threads, load yoke, load spreader, hanger, load cord, weights set.