The quality of drilling muds is a most important characteristic of drilling technology. Sharp growth of requirements to measurements of the muds’ parameters due to appearance of ever more sophisticated mud formulations, intended for various conditions of drilling. The wide spread manual method of taking measurements of drilling mud parameters cannot meat requirements of modern technologies any longer. A new principle of automatic measurements of the drilling mud parameters with transferring the results to display (like the values of other drilling practices) is proposed in the paper. The principle is illustrated by a scheme of automatic measurements of the mud’s density (patented in Kazakhstan). Similar schemes are worked out for measurements of density, jell strength and filtration.