The reason i am such a huge advocate of the baseplate compass is brunnton ability to take a bearing from a map or transfer one to a map using only the protractor feature of the compass. Helper, jackson school of geosciences, ut austin mirror lift pin for. To set the magnetic declination for your location automatically, select magnetic. Hi i am having trouble with my compass when i point it at my car as my home point and go out in the woods when i am ready to go back to the car from a day in the woods i look at the point where i started from and start to head back but i always come back way off and some time i go past my home point and if i keep going it could go on for ever what am i.
Compensate the magnetic declination for lisbon in portugal 5w, select 5 in the magnetic. Compasses, however, point to magnetic north a region above the earth where the earths magnetic fields pull. May 27, 2016 a compass points to the magnetic north. Set declination and line up edge of compass connecting. Brunton and suunto, two of the biggest navigation brands, differ in the way declination is adjusted on most of their compass models. Draw line using edge of compass as a straight edge m. Open both the cover and large sight, until they extend parallel to the. Brunton pocket transit to measure azimuth compass bearing, vertical angles, inclina.
Place the fully opened compass on the map with the scale edge alongside a northsouth meridian longitudinal line, grid line. Hold compass at waistlevel, with sight cover pointing. The superiority of the present day compass results from a better knowledge of the laws of. Click picture to enlarge click picture to enlarge please note that you will pay actual shipping charges set by the usps as i do not charge a handling fee.
The lesser negatives are the difficulty in setting the declination correction accurately and the. Magnetic declination is constant along the socalled. The billeted aluminum, waterproof compass contains a fast, magnetic northseeking, rear earth magnet thats balanced on a sapphire jewel bearing for quick measurements. Negative magnetic declination or variation adjustment if the magnetic declination or variation is negative as shown for the cape town area below, clicking ok on the message alert will automatically compensate the compass bearing 29 by adding the declination value of 24 30 36 24. Apr 07, 2008 setting magnetic declination on your compass. Brunton, who created the worldfamous pocket transit in 1894, equipment brand brunton expands its compass category with a new series, truarc. In the given example, the large mountain in the second photo was selected as. Introduction to the brunton compass geo420k, lab 1. Determine the magnetic declination for your area see declination 101 below, and set your compass for that variance, which is marked on most maps. To set the magnetic variation value manually, select user, enter the magnetic variance, and. Hold map and compass together and turn until the compasss magnetic needle aligns with the compasss orienteering arrow red on red. The brunton pocket transit is not only a compass, it combines a surveyors compass, prismatic compass, clinometer, hand level and a plumb into a single instrument. Line up the declination number with the small white dot on the rim of the base.
The baseplate compass is a practical, simple to use, liquid filled compass. Declination 101 maps are oriented toward geographic, or true, north the north pole, but compass needles point to magnetic north, a place that wanders slowly within the canadian arctic. Some silva compasses have a declination adjustment screw, located on the bezel. Sighting mirror, clinometer, toolless declination adjustment, and the protective cover and foot make this a. A pdf file of the current manual for brunton compasses is available at. The truarc collection debuts six new compass models fit for all experience levels, from entrylevel scouting to backcountry adventures. May 12, 2017 global compass series and mobile application to launch in august 2014 boulder, co january 22, 2014 drawing upon the pioneering spirit of founder d. The exception to this if there is no declination adjustment for where youre hiking. The compass points to magnetic north, which is a very doubful concept in most places. Because magnetic north and true north are not at the same location, you must set the declination on your compass. How to adjust for magnetic declination or variation. Figure 3 shows the magnetic declination for 11 degrees east of north.
If the declination is an east declination, adjust the azimuthquadrant ring on the brunton compass so that the index pointer the thing that looks like a sharpened nail on the inside of the brunton case on the side opposite the mirrored lid is pointing to the left of the 0 mark on the ring. All models in the collection are equipped with brunton s specially magnetized truarc global needle system and toolless declination adjustment settings to ensure compatible use worldwide. If the magnetic declination is more than a few degrees, you must compensate for it when navigating. View and download brunton classic compass user manual online. Avoid exposing your compass to high strength magnetic fields, electromagnets electric motors. Magnetic declination when compass and map are used together its important to know the local magnetic declination and how to compensate for it. Align edge of compass base plate and ns edge of map. It does not point toward magnetic poles but responds to the local field. Compasses work because the earth acts like a giant bar magnet.
Magnetic declination 11 degrees west means the north arrow of the lensatic compass will point 11 degrees west of true north. For your consideration is a vintage preowned sportmans compass model 8040 by brunton with manual in original box. May 28, 20 krik of black owl outdoors explains the phenomenon of magnetic declination. Navigation instructions for utm roamer scales compass pocket guide transit manual geo transit manual axis transit manual truarc manual truarc 8010 luminous manual 9077 lensatic compass 58ce rally compass instructor kit student workbook instructor kit instructors study guide instruments omnisight omnislope adc pr. Declination varies throughout the world and is shown on topographical maps with a diagram, identifying magnetic north mn and the degree variance from true north tn. For more information about magnetic declination and how to use your compass, we encourage you to view this page on the national wildfire coordinating group website. Magnetic declination brunton eclipse instruction manual page 7 there is also a scale on back for the adjustment set to zero in this photo. The zero pin is the pointer used for magnetic declination adjustment. The angle in between magnetic and true north is your declination. Guide to trimble geoxh gps with terrasync the geoxh provides submeter accuracy after postprocessing, and can be configured to. The brunton pocket transit is a particular interest of mine.
The star indicates true north toward the brunton compass manual of virtually all maps and the mn indicates the direction to the north magnetic brunton compass manual from the center of the map. To adjust the compass declination angle, go to compass mode and hold down adj button for 3 seconds, and the compass homing mode. Remember, easterly declination values are represented as positive numbers and westerly declination values are represented as negative numbers. Magnetic declination explained and setting magnetic. Now you may want to go to our next learning page, so you can learn how to use your declination value.
Directionoftravel arrow for pointing to target on map and when moving 3. Use a compass to explore, navigate, map terrain and travel around the world. If a magnetic north bearing or compass bearing is desired, the compass must be adjusted by the amount of magnetic declination before using the bearing so that both map and compass are in agreement. Mar, 2018 a compass is a floating magnetic needle that always points toward a magnetic north pole. The rotation of the compass module on the baseplate to set the local declination is really very smooth, but there is just enough friction to keep the declination set. View and download brunton transit instruction manual online. Magnetic declination not only changes with geographic location, but also changes slightly over time. How to use magnetic declination with a compass skyaboveus. This variance between the norths can cause a lot of confusion and some extra miles if you are in the backcountry. The brunton compass, which will be discussed shortly, has an index pin at the north end of the compass ring the ring around the face of the compass with the azimuths printed on it. Jun 03, 2016 the brunton truarc 10 is a baseplate style compass with a declination adjustment. The steps presented below for each brand are for a magnetic declination of 15.
In some areas, magnetic declination can be considerable, so it is a good idea to check for declination on your map or on the internet. The difference in angle is called magnetic declination, and it varies from 21 degrees west in maine to 26 degrees east in alaska. The compass is held in the same way as when measuring vertical angles. Using the brunton compass as a hand level the brunton compass is converted to a hand level by setting the clinometer exactly at 0, opening the lid 45o, and extending the sighting arm with the sighting point turned up. Orient compass on map so black lines meridian lines are parallel to north 3. Needle with red end that points to magnetic north 2. After setting the declination correction, the compass can be used without having to account for the declination until you move to a new location with a different declination. If your suunto compass has a fixed declination scale, do. Introduction to the brunton compass jackson school of.
This article explains how to find and adjust for magnetic declination while navigating by compass. Declination setting declination adjusts the compass for the local magnetic fields. You must adjust for declination, east or west, when using a compass with a map. This video demonstrates how to adjust the declination on a brunton truarc compass.
If you are using a brunton compass, you set the magnetic declination by turning the declination setting screw on the side of the compass until the reading on the graduated circle in the compass lines up with the index pin at the top of the compass at the proper declination. Mar 02, 2011 i switched from a simple suunto a10 base plate compass to a brunton 15tdcl sighting compass last year because i wanted a compass that was more robust for bushwhacking, backpacking in open country across scotland, and for avalanche prediction in new hampshires white mountains. Since your map is based off of true north and your compass points to magnetic north, you need to adjust for magnetic declination to get your map and compass on the same page. Brunton compro transits 6050 m2 06400 mils the brunton pocket transit is not only a compass, it combines a surveyors compass, prismatic compass, clinometer, hand level and a plumb into a single instrument. In addition to a freely turning magnetic needle, a.
To manaul this, we set the clinometer at the 0o brunton compass manual, and flip the compass sideways vertically as described for measuring the plunge. M2 12909304260 tm 9129033315, 7 november 1963, is changed as follows. Brunton base plate declination adjustment compasses 9020g. Except along agonic lines, the needle points east or west of true north, and this is called the declination. This little detail is not mentioned in the field manual.
You can determine the magnetic declination of any location on earth using the online declination. Place the fully opened compass on the map with the scale edge alongside a. To set geographic north as the heading reference, select true. Suunto core using compass mode getting correct readings.
Eclipse 8099 instruction manual section 1 orientation eclipse 8099. Find your declination adjustment value the compass store. Automatically adjust a set compass bearing by adding or subtracting the magnetic declination or variation value for anywhere in the world. This is the pointer used for magnetic declination adjustments part 4. Brunton compass manual pdf view and download brunton user manual online. The brunton truarc 10 is a baseplate style compass with a declination adjustment that is best suited for use in forested or mountainous terrain where you can rarely see your destination. Please register your truarc compass by visiting brunton has. Brunton worlds best compass from brunton is a composite body compass, made durable for reliability and extremely resistant to magnetic interference. Exact and clear instructions on a silva expedition compass, it has. Brunton base plate declination adjustment compasses 9020g has been discontinued by brunton and is no longer available. Compensate the magnetic declination for lisbon in portugal 5w, select 5 in the magnetic declination setting. Helper, jackson school of geosciences, ut austin using the silva as a protractor. Bezel with directional scale for using as a protractor 5.
This configuration of the transit series uses a single rareearth magnet to resist demagnetization and provides fast readings due to its relative magnetic strength. The principle of the present day magnetic compass is in no way different from that of the compass used by the ancients. The direction of a line on the ground is given by the bearing of the line, which is the horizontal angle between the line and a reference, commonly north in the quadrant scale, or o marked as 0o brunton compass manual the card brunton compass manual the azimuth scale. The brunton truarc 7 compass has the features you need for advanced navigation and orienteering, leaving nothing to the imagination when it comes to finding your way in the wilderness. The geo pocket transit compass 0360 scale from brunton is a specially engineered analog navigation device built to deliver fast and accurate readings. You can also explore other items in the compasses yourself to try and find the perfect replacement for you. Brunton 15tdcl sighting compass section hikers backpacking blog. Brunton f2001 conventional pocket transit compass asd.
View and download brunton truarc user manual online. Finally it provides step by step instructions on orienting a compass, taking. Magnetic declination detailed information on separate page. The added truarc evernorth magnet settles readings faster and will not lose polarity. And the gear driven magnetic declination adjustment allows for east or west declination settings to 180 degrees. Brunton expands compass series with debut of truarc.
This orients map to landscape, so you can correlate contour lines with surrounding features. Introduction to the brunton compass and compass surveys. The ultimate compass for professionals on the move, the brunton geo pocket transit international is compact, versatile, and precise. Results you will see your declination value at the top of this magnetic values list. Orient the map so its grid lines point toward true north. Find and set magnetic declination at your position.
Since my days as a geology student, taking strike and dip readings across the southwest us to my days as a topographer in the army corps of engineers ive always found the pocket transit a marvel of ingenious, compact technology. You can check to see if the setting is correct by orienting your compass such that. The truarc 20 features all of the things you need for advanced navigation. Sighting mirror, clinometer, toolless declination adjustment, and the protective cover and foot make this a timeless backcountry companion. Digital compass with altimeter instruction manual 1. In its default setting, the magnetic needle p is always locked. Before navigating you should check your local magnetic declination from a trusted source, such as a recent map or the noaa website. Navigation instructions for utm roamer scales compass pocket guide transit manual geo transit manual axis transit manual truarc manual truarc 8010 luminous manual 9077 lensatic compass 58ce rally. It consists of a magnetized needle, or array of needles, pivoted so that rotation is in a horizontal plane. Topographic maps have a diagram showing the magnetic declination angle. Baseplate with straight edges and scales for working on map 4.
According to united states army corps of engineers, the engineer compass is also called a lensatic compass. How to set declination on most brunton and suunto compasses. The easiest way to correct a map measured bearing to the correct bearing to be set on the compass, to account for magnetic declination. Vintage brunton 8040 1983 usa made sportsmans compass with manual box. The manual includes the magnetic declination for some major cities. It marks the bearing you set by rotating the compass housing. Where magnetic north is east of true north, the compass needle is deflected to the right. Our product experts have helped us select these available replacements below.
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