This invention relates to a kind of liquid proportion variation Balance, includes upright bracket, beam with scale V-groove, dropper, mating ridden yard, agate tool apron. the feature is: this Balance also include equilibria nut, equilibria hand and scale; middle of agate tool apron set equilibria hand and scale, both sides set up one beam with scale V-groove; dropper on beam top set up adjustable equilibria nut; two thermometer separately hang on two glass graduate by clincher, design to convenience take out; The undersides of two dropper of beam top each suspend one standard plumb which layin glass graduate interior.