Nikon VQA060AA Reference Manual page 182

Virtual Horizon
You can check the degree of camera tilt in two directions.
Rolling direction
1 / 2 5 0 1 / 2 5 0
When the reference line is displayed in
yellow, the camera is tilted in the left or
right direction. The reference line changes
to green when the camera is level. Each
scale mark represents 5 degrees.
C
Precision of the Virtual Horizon
Note that an error becomes large if the camera is tilted forward or backward greatly. If the
camera is tilted to the unmeasurable extent, the graduations of the virtual horizon turns off.
Using the Menu
The Setup Menu
2 5 m 0 s 2 5 m 0 s
F 5 . 6 F 5 . 6 1 4 0 0 1 4 0 0
Pitching direction
When the b in the center is displayed in
yellow, the camera is tilted in the forward
or backward direction. The b changes to
green when the camera is level. Each
scale mark represents 10 degrees.
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2 5 m 0 s 2 5 m 0 s
1 / 2 5 0 1 / 2 5 0 F 5 . 6 F 5 . 6 1 4 0 0 1 4 0 0