Checkline DFX-7 - Manual (Page 153)

DFX-7
Ultrasonic Flaw Detector
149
2) Use the UP and DOWN arrow keys to scroll through the sub menu items
until DELETE ALL DATA is highlighted.
3) Press the ENTER key to activate the confirmation screen.
4) Press the OK key to delete All Files from memory, or the ESC key to abort.
5) Press the MEAS key to return to the measurement screen.