Features Solid wood is strong and durableIron ring firmly and easily hangingStrong support for metal strutsFine balance adjustment on both endsUses This lever rule is used for the experimental use of the balance of physics teaching and can also be used for teachers to demonstrate experiments Structure hook adjusting nut screw shaft shaft wax lineBoth ends of the shaft are equipped with screw nuts for leveling and the adjusting nut can adjust the shaft to a horizontal level When the shaft is in a horizontal position the lever is in equilibrium and the rod has four movable hooks Specification Brand KEPUModel J21030Material WoodSize 50 2 1cm Package includes 1 50cm Wooden Lever Ruler