Verify that the penetrometer has the needle penetration placed and check that the indicator needle is placed at “zero” on the scale. Place the container cylinder so that the sample surface is level with the needle. This is done by rising or lowering the base with a screw located in the back of the penetrometer.  Press the needle shaft and at the same time start the count of 5 seconds using a stopwatch or clock. And once the 5 seconds elapsed release the shaft of the penetrometer. Without moving the needle or the penetrometer´s base, press the handle located on the top of the penetrometer, until it touches the top of the needle holder. Finale take the reading which indicates the needle on the scale, the reading is given in tenths of a millimeter.

Verify that the penetrometer has the needle penetration placed and check that the indicator needle is placed at “zero” on the scale. Place the container cylinder so that the sample surface is level with the needle. This is done by rising or lowering the base with a screw located in the back of the penetrometer.  Press the needle shaft and at the same time start the count of 5 seconds using a stopwatch or clock. And once the 5 seconds elapsed release the shaft of the penetrometer. Without moving the needle or the penetrometer´s base, press the handle located on the top of the penetrometer, until it touches the top of the needle holder. Finale take the reading which indicates the needle on the scale, the reading is given in tenths of a millimeter.