* Preliminary field investigation of undrained shear strength of soft to medium stiff clays. * Geonor 180 degree slip-coupling system gives a better evaluation of rod-soil friction. * Direct penetration to 10 meters without need for pre-boring. * Two vane sizes: Measurement range from 0 to 80 kPa &0-60 kPa. http://www.lab365.co.kr/wizmart.php?code=000016&query=view&no=1140