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7

HOW TO CHANGE THE BATTERIES 

To change the battery, use a coin to remove the battery compartment cover by turning it counter-clockwise, 
until the “unlocked”  icon and white dot on the cover line up with the dot on the binocular. Set the cover aside 
and remove the battery.  Note the “+” and “-“ polarity markings on the battery. Be sure to insert the new battery 
correctly, in the same direction as shown on the sticker inside the battery compartment, with the “+” (positive) 

terminal going in first so it is at the bottom of the compartment, and the “-“ negative end facing the battery 
cover. Replace the battery cover with the “unlocked” icon and two dots lined up again, then turn it (with fingers 

or a coin) until the “locked” icon lines up with the dot on the binocular. The battery should be taken out if the 
binoculars will not be used for a long time. Batteries left in the binocular for prolonged periods of time without 
being used may leak and cause damage to the binocular. After replacing the battery, be sure to follow the 
calibration procedure for the digital compass.

B

attery Requirement: One CR2 Lithium (3 volt)

 

Cover

Unlocked

Cover

Locked

Polarity 

Sticker

ABOUT THE TILT INDICATOR

The left side of the digital window at the bottom of the display indicates the binocular’s vertical tilt in degrees. 
When you are holding the binocular level, the indicated tilt angle will be “ 0

”. Keeping the binocular within no 

more than 5 degrees (+ or -) of zero on the tilt indicator will help to ensure more accurate results when using 
the compass or ranging reticle. 

Summary of Contents for 137570

Page 1: ...Instruction Manual Model 137570 Binoculars with Digital Compass Lit 98 1192 08 12 ...

Page 2: ...2 Compass Power Switch Battery Cover Tripod Attachment Socket Cover Left Eyepiece Focus Right Eyepiece Focus Parts Reference ...

Page 3: ...cellent light transmission along with a UV reducing lens coating and internal UV filter 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...

Page 4: ...change in your location since the last calibration 2 After changing the battery especially if a different brand is used 3 If the binocular was in direct contact with a large metal object for example a steel table while the power was on note that the power automatically shuts off after one minute so this should not be common TO CALIBRATE THE COMPASS After turning on the compass by pressing the powe...

Page 5: ...en the compass indicates anywhere from 338 to 22 degrees the North segment will switch off become clear indicating that the binocular is pointed in a northerly direction Step 1 Pitch rotate 1 full cycle end over end in a vertical plane up down Step 2 Yaw rotate 1 full cycle spinning around in a horizontal plane left right Step 3 Roll rotate 1 full cycle as shown along the binocular s center hinge ...

Page 6: ...as a value of 5 MIL 1 Mil is equivalent to an angle that can determine an object one meter in height at a distance of 1000 meters Therefore if a navigation chart gives the height of an object by sighting on it and counting the number of MILs you can determine how far away it is Here are the two formulas note the use of metric units x 1000 m Distance in meters Object height in meters 260 270 280 26...

Page 7: ...h fingers or a coin until the locked icon lines up with the dot on the binocular The battery should be taken out if the binoculars will not be used for a long time Batteries left in the binocular for prolonged periods of time without being used may leak and cause damage to the binocular After replacing the battery be sure to follow the calibration procedure for the digital compass Battery Requirem...

Page 8: ...hange in temperature Technical Specifications Binocular Specifications Magnification 7x Objective Lens 50 mm Eye Relief 17 5 mm Real Field ofView 7 0 Field ofView 1000 yds 367 ft Exit Pupil 7 1 mm Compass Specifications Azimuth Accuracy 3 3 degrees Azimuth Range 0 359 degrees Azimuth Resolution 1 degree OperatingTemp 10 55 C Current Consumption 12 mA Voltage Required 2 7 3 4 volts Tilt Sensor Spec...

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