Sondeerstang penetrometer Ø 15 mm, 50 cm
Conus 2 cm2, 60 °
https://production.royaleijkelkamp.com/shop/d0042634-conus-2-cm2-60-deg-27010
https://production.royaleijkelkamp.com/web/image/product.template/27010/image_1920?unique=0d6fc35
Sondeerconus, basisoppervlakte 2 m2, tophoek 60°.
