Used to determine the consistency of a bituminous sample under fixed conditions of load, time and temperature.

The penetration is expressed in distance of tenths of millimeters vertically penetrated by a standard needle.

Consisting of:
-Aluminium base with levelling screws and spirit level
-Chromed vertical rod with micrometric displacement device
-Dial gauge Ø150 mm , graduated in 360°, division 0,1 mm
-Slider, brass made, with free fall
-Stop and release push button
-Automatic zero set
-Penetration needle
-Set of weights 50 and 100 g
-Brass cup Ø55×35 mm
-Brass cup Ø70×45 mm