From each degree marked on the arcuate scale of the quadrant ran two lines at right angles to one another and parallel to the straight edges of the instrument.
Kwinqanaba ngalinye eliphawulwe kwisikali esisiso kwisahlulo sesine sesangqa ebaleke kwimigca emibini kwiengile yasekunene ukuya kwenye enxuseneyo eya ngqo kwisiphelo sesixhobo