Owner`s Manual•W

Owner`s Manual•W
Compass light [Antigua]
To read your compass in the dark, press the compass light switch (6) to illuminate it in red light.
Batteries [Antigua]
Two batteries (included) are required to operate the compass light. To install: unscrew the battery cover
(8) on the top of your binocular using a coin or screwdriver. Install the two batteries, positive (+) side
facing up, and screw the cover back into place. All of the following batteries are suitable for use with
your Antigua binoculars: AG12, GP186, LR43, and 1176A.
Instructions for Care
To protect the binoculars, store them in their case and keep them in a dry area. Never leave them out in
direct sunlight (such as on a car dashboard) for long periods of time. Avoid banging and dropping.
Extremely Important Note
It is not necessary to clean binoculars internally. Any attempt to take the binoculars apart or clean them
internally will result in damage and void the warranty.
Do not use this product to view the sun. Looking at or near the sun with or without binoculars
may cause instant and irreversible damage to your eyes. Eye damage is often painless, so there
is no warning to the observer that damage has occurred until it is too late. Children should
always have adult supervision when using binoculars.
If you are ever dissatisfied with any purchase from us, simply return it. We’ll replace the item
or issue a company credit for items you return. We want you to have complete peace
of mind on every purchase you make from West Marine.
BINOCULARS I MODEL 10700508 I MODEL 10700516
Owner’s Manual
• Waterproof, dust-proof, all-weather binoculars are designed for
boating and other rugged outdoor activities
• Nitrogen gas inside the binocular eliminates fogging and mold on
internal lens surfaces even under extremely severe conditions, including
rainstorms and high humidity
• Antigua’s internal rangefinder scale and illuminated compass help users
determine the distance or size of objects, as well as their direction
• High-index BaK-4 prisms produce a bright, sharp image with vivid
contrast for detailed viewing
• Rubber-coated body provides great shock resistance and a comfortable,
secure grip
• Internal center focus
• Compact and convenient
Battery compartment [Antigua only]
Compass light switch [Antigua only]
Compass housing [Antigua only]
Objective lens
Main body
Reticle focus adjustment [Antigua only]
Diopter adjustment
Internal center focus adjustment
Twist-up eyecups
10 Strap holder
Eyepiece Distance Adjustment
Fig. 1
Fig. 2
For best viewing, the binoculars should be adjusted for the individual user so that eyepieces line up with
the user’s eyes. The distance between the eyes, called “interpupillary distance,” varies from person to
person. To achieve perfect alignment of lens to eye, follow these simple steps:
1. Hold your binoculars in the normal viewing position.
2. Grasp each barrel firmly. While looking through the binoculars, move the barrels closer together or
farther apart until you see a single circular field. Reset your binocular to this position each time you
use it. The eye distance setting is indicated on the scale located on the binocular hinge.
Reticle Focus [Antigua]
The reticle can be focused for comfortable viewing by adjusting the left eyepiece focus position.
1. Cover the right objective (front) lens with your hand, and look at the reticle through the left eyepiece.
2. Adjust the reticle focus dial (2) on the left eyepiece until the reticle appears sharp and clear.
3. The reticle is now focused for your eye. Note position of reticle focus dial, and return it to this
position any time you use binoculars.
Diopter setting and Internal Center Focus
The diopter setting corrects for vision differences between the user’s two eyes, so the binoculars can be
focused correctly for both eyes. To adjust the diopter:
1. Set the right eyepiece to 0 and look at an object that is approximately 100 feet (30 m) away.
2. Keeping both eyes open, cover the right objective (front) lens with your hand.
3. Adjust center focus wheel until image in the left eyepiece appears sharp.
4. Cover the left objective (front) lens, then rotate the right eyepiece (3) until the image appears
sharp again.
5. The diopter setting is now correct for your eyes, and you need only adjust the center focus to view
objects at different distances. Note the diopter setting for future use.
Twist-up Eyecups
To use binoculars while wearing eyeglasses or sunglasses, twist the eyecups clockwise until they are as
short as possible. This will allow you to bring your eyes closer to the binoculars, improving your field
of view. To use binoculars without glasses, twist them into the position you find most comfortable.
Reading the Rangefinder Scale [Antigua]
The rangefinder scale is a useful navigation tool if you know the size or distance of an object. If you know
an object’s size, you can use the rangefinder to calculate its distance. Conversely, if you know the
object’s distance, you can calculate its size.
To measure distance, simply apply the following formula:
Distance =
1000 x Object Height
Rangefinder Scale Reading
Example (to find distance): if the object is 20 meters high
and the rangefinder scale reading is 16 (Fig. 3), then:
20 M (height) x 1000 = 1,250M(distance)
16(rangefinder scale reading)
To measure object size, the formula becomes:
Fig. 3
Object Size =
Distance x Rangefinder Scale Reading
Example: if the object is 1,250 meters away and the rangefinder scale reading is 16, then:
1,250 M (distance) x 16 = 20 M (object size)
Using the Compass [Antigua]
Fig. 6
READING: When you look into the eyepiece, you will see a compass window with figures and lines
below the field of view. The compass shows orientations as angles: north is 0°, east is 90°, south is
180° and west is 270°. Between numbers, each line represents 1°. After aligning the object with the
rangefinder scale in the center of the field, read the compass.
LOCATING YOUR POSITION: These binoculars, together with a chart and protractor,
can be used to locate your position. For example, the binoculars plus the map in
Fig. 4 could be used to determine the location of a boat sailing within the map’s area:
1. From the boat, use the binoculars to locate the buoy shown on the chart (Fig.4).
In this example, the compass would show that the buoy is located 190° from the boat.
Fig. 4
2. Use this information to determine the direction from the buoy to the boat. (To do this,
subtract 180° if the object’s reading is 180°or greater; add 180° if the reading is less than
180°.) So, 190° (direction from boat to buoy) - 180= 10 ° (direction from buoy to boat).
3. On the map, draw a line from the buoy extending in a 10° direction (10° from
magnetic north). You now know your boat is somewhere along this line (Fig. 5).
4. To determine your boat’s exact position, use the binoculars to locate a second
Fig. 5
object, the lighthouse. The compass will show that the direction from your boat to the
lighthouse is 300º.
5. Then calculate the direction from the lighthouse to your boat: 300°- 180° = 120º.
6. Finally, draw a line extending 120° from the light-house (Fig. 6). Your boat is
located at the point where the two lines intersect.
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