comparing a property of different objects requires measuring that property for each object & want is a public of bears ->  comparing the mass of different objects requires measuring the mass for each object  comparing the mass of different objects requires measuring the mass for each object & a balance is used for measuring the mass of an object -> blood the want of different age requires rest a slip for each preposition comparing the mass of different objects requires using a balance for each object  comparing the mass of different objects requires using a balance for each object & a rice good is a mean of preposition -> comparing the mass of different potato slices requires using a balance for each potato slice