The apparatus consists of a penetrometer with adjustable head combined with a gear that permits a fine adjustment of the cone position right upon the bitumen sample: the results are showed on a digital display placed, together with an electronic timer in an independent control box.Optionally, refrigerated baths of various sizes are available (please require related technical bulletin): by connecting the bath to the transfer dish it is possible to penetrate samples while immersed in water at 25°C or other test temperatures.