Operation Manual

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BUSHNELL MARINE porro prism binoculars are designed for the boating enthusiast in particular, but are also
ideal for any demanding environment or application where rock-solid durability is required. Your Marine model
# 137570 features a digital compass built into the viewing optics, with direction and bearing indicators tracking
as you view. Bearings are called out in easy-to-read precise 1° increments, ideal for navigation and locating
objects accurately. The digital compass delivers reliable accuracy anywhere in the world (both Northern and
Southern hemispheres). A range-nding scale allows the viewer to estimate the range to objects of a known
size. A tilt sensor and display help ensure the binocular is held at a level angle for accurate operation. The
BUSHNELL MARINE is fully waterproof/fogproof and shock protected with suregrip rubber armoring, and
has roll-down eyecups for use with sunglasses and prescription eyeglasses. The optics feature multi-coated
lenses for excellent light transmission, along with a UV reducing lens coating and internal UV lter to prevent
potentially harmful ultraviolet light (wavelengths below 400nm) from reaching your eyes. The BUSHNELL
MARINE comes complete with rugged nylon case and neck strap. Built to last, with a lifetime limited warranty.
ADJUSTING THE BINOCULARS
First, adjust the width (interpupillary distance) of your binoculars with the central hinge, so that when you
look through them, you see a single circular image. Then focus the binocular for one eye at a time by turning
the oculars (eyepieces) until you see an equally sharp image with each eye. If more than one person will
be using the binoculars, you should mark the left and right eyepieces for your own vision to permit quick
readjustment.
ABOUT THE DIGITAL COMPASS
The built-in compass is a precision unit with a digital display which indicates
bearing in degrees, corresponding to the direction the binoculars are aimed, as
well as the compass point heading. When using the compass, always keep in
mind the local variation between magnetic and true north. To turn on the compass
display, press the rectangular button on the top left side of the binocular.