Simplified design on the basis of Searle’s pattern,but having square rods joined together through a phosphor bronze strip instead of metal frame. One of the rods has 10-0-10scale with a 0.01mm micrometer head for adjusting the spirit level. Rods have self-centering chuck at its top for holding wires and load hooks at the bottom. Also included ceiling bracket carrying a pair of chucks, a counterpoise weight and a set of two wires, one each of brass 28 SWG and steel 28 SWG.