Vintage Precision Adjustable Screw Jack Set of 4 For Sale

Here is a set of 4 vintage precision adjustable screw jacks ideal for those who need to make precision alignments and leveling.
Dimensions: Height-7 1/2\" expanding to 11 1/2\". Bottom pad is 3\" square. L-shaped top rest is 2\" square. Center adjustment with diamond cut is 2 1/2\" in diameter. Solid steel. Perfect for tight places and leveling and when you need to support corners. The box has no handle strap and the top has a couple of cracks and has seen better days (still works for storing).