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Summary of Contents for Bushnell 137570
- Page 1 Binoculars with Digital Compass Instruction Manual Model: 137570 lit. #: 98-1192/08-12...
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Page 2: Parts Reference
Battery Right Eyepiece Left Eyepiece Cover Focus Focus Compass Power Switch Parts Reference Tripod Attachment Socket Cover... - Page 3 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.
- Page 4 ABOUT THE DIGITAL COMPASS Power automatically turns off after one minute to prolong battery life. If the display does not come on, replace the batteries (see “How to Change the Batteries”). Before using the compass for the first time, it is necessary to calibrate the compass, using the following procedure: COMPASS CALIBRATION PROCEDURE This calibration procedure will ensure that the displayed readings are accurate for the area in which the...
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Page 5: Calibrating The Compass
CALIBRATING THE COMPASS Step 2: Yaw Step 3: Roll Step 1-Pitch (rotate 1 full cycle as shown along (rotate 1 full cycle “spinning around”, (rotate 1 full cycle “end over end”, the binocular’s center hinge axis) in a horizontal plane left/right) in a vertical plane up/down) READING THE COMPASS After completing the last rotational cycle, the compass is calibrated, and will display “0”... - Page 6 HOW TO USE THE RETICLE The vertical scale (reticle) visible through the left half of the binocular, above the compass display, allows you to calculate distance to an object if you know its height, or to calculate the height of an object if you know its distance from you.
- Page 7 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.
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Page 8: Technical Specifications
IMPORTANT NOTE After exposure to saltwater or spray, flush the binoculars thoroughly with fresh water and wipe dry. Avoid extended exposure to bright sunlight and severe temperature fluctuations. For example, if the binocular has been used under very cold conditions, bringing it into a heated environment could cause condensation build up.