quick overview :

Standard Penetrometer With Automatic Timer The apparatus is available in two versions, Hand operated and Electrically operated with automatic timer. The apparatus consist of a cast aluminum base with an iron stand on which moves an aluminum arm. A 6" dial is fixed on this arm and a brass chromium plated rod slide through the lower portion of the arm. A needle with weights is fitted to this rod. The dial is graduated from 0-400 in one tenth millimeter sub division. Supplied complete with adjustable needle holder, penetration needle, sample container, transfer dish and weight of 50 gm. The Automatic model is supplied with automatic digital timer and electrical arrangement to carryout the test without need of stop watch and with great ease and accuracy, even by a layman.