Furuno TS-331A - Manual (Page 28)

2. SONAR OPERATION
20
2.5 Finding Range and Bearing from Own Ship to a
Point
Choose Range / Bearing from the Draw menu or click the button on the
draw toolbar. Roll the mouse to position the cursor where you want to measure
the range and bearing and click the left mouse button. The range and bearing
from own ship to the point is shown. To find the range and bearing between to
other points, repeat the above procedure.
Range and bearing
to point
+
R: 199.5m
B: 348.1 Deg
Finding range and bearing from own ship to a point
2.6 Zoom
Zoom Factor on the View menu lets you choose the zoom magnification, from
100, 125, 150, 175, 200, 300 and 400 (%).