A reflecting hand navigational instrument constructed on the same principle as the sextant but measuring angles up to 90 degrees only. Also known as an octant. One-fourth of the circumference of a circle. A fitting in the shape of a sector of a circle secured to the rudder stock and through which the steering leads turn the rudder. The rim is provided with two grooves to take the steering chains or ropes and is of sufficient length of arc so that the leads are tangential to the rim at all rudder angles.
Isixhobo esibonisa indlela kuhambo ngenqanawe esakhiwe ngomgaqo ofanayo nowesekstent, kodwa ulinganisa ii-engile ezingamaqondo angma-90 kuphela.