Isakhiwo sinobukhulu obahlukeneyo, kwaye ezisemgangathweni zezi: 21 * 41/41 * 41, 41 * 62, 41 * 82, njl. Umatshini ofanayo unokuvelisa ubukhulu obuhlukeneyo, unokwamkela uyilo olulungelelanisiweyo oluzenzekelayo okanye uyilo lwekhasethi okanye uhlengahlengiso lwe-roller. nge shims.
Iiprofayili zesakhiwo zisetyenziswa ngokubanzi, zingasetyenziswanga kuphela kwinkxaso yelanga, kodwa nakwinkxaso yokuchasana ne-seismic, kunye namandla ayo aphezulu kunye nokufakwa okulula, kuye kwacetyiswa ngokubanzi kwaye kusetyenziswa kushishino lokwakha.