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Knowell’s Balance : The balance is fitted with two pans marked left and right with respective hangers at the end of the beam and with a graduated plate with seven ranges A to G fixed on a sliding stand. The lea of the yarn is to be kept on the right pan and the weights provided on the left pan and also the corresponding rider weight on the beam. After placing the weights and the lea raise the beam on its fulcrum. Move the rider weight on the beam till the pointer is set on zero. The figure received on the scale corresponding to the rider weight |