Lowrance electronic LMS-337C DF - Manual (Page 76)

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At left, little ColorLine indicates a soft bottom, probably sand or mud.
At right, the wider ColorLine indicates a harder ottom.
Depth Cursor
The depth cursor consists of a horizontal line with a digital depth box
on the right side. The numbers inside the box show the depth of the
cursor.
Left, Sonar Page menu with Depth Cursor selected. Right, sonar chart
with active depth cursor. The cursor is set at 34.64 feet deep.
The cursor can be moved to any location on the screen, letting you pin-
point the depth of a target.
1. From the Sonar Page, press MENU |
↓ to
D EPTH C URSOR
| ENT .
2. The depth cursor appears. Press
↓ to lower the cursor line; press ↑ to
raise the cursor line.
3. To clear the depth cursor, press EXIT .
Cursor line
Depth box
Wider
ColorLine
Thin or no ColorLine