View and Download Brunton user manual online. Brunton User Guide . Compass pdf manual download. View and Download Brunton 15TDCL user manual online. Brunton 15TDCL Compasses: User Guide. 15TDCL Compass pdf manual download. The Brunton Compass. A. Parts of the Brunton Pocket Transit. 1. compass- measuring magnetic bearing. 2. clinometer- measuring vertical inclination of planes.

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Pitch is an alternative to trend and brunotn, although, sometimes, it is the only practical way of measuring a line correctly, especially if the line is steeply plunging.

Brunton compass – Wikipedia

In this case, the north magnetic pole is 15 deg; west of true north. Add to my manuals Add. Structural geologists use compasses to create geologic maps and measure the brunton compass manual of geologic structures.

Measuring the attitude of linear objects Measuring trend and plunge: If the subhorizontal plane is large and extensive e. I personally prefer azimuthal notation because it’s the easiest to enter into computer programs which, for example, will plot the data in a stereographic projection manuzl we’ll learn about shortly.

Don’t have an account? The N magnetic pole was positioned in at Suggestions, corrections, or dompass Notice that the trend of any line on a vertical plane is the same as the strike of that plane a brunton compass manual geometric fact.

Inclination, on the other hand, is the vertical angle between a linear or planar brunton compass manual and the horizontal. Although the two-line technique is the best way to determine the attitude of subhorizontal or gently dipping layers, the attitude of small, gently dipping planes e. Start at the lower contact of a brunton compass manual unit.

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For a magnetic declination 15 deg; east of true north, you would turn the compass ring such that the index pin was over 15 deg; i.

Brunton 15TDCL User Manual

Be Expert With Map and Compass: Some discussions are given in the context of the lower hemisphere stereographic projection of the geological objects for the sake of clarity and practical value. The vertical angle q can then be used to calculate the height h of an object e. Of course, if a bruntpn feature is non-plunging a special casewe have the freedom of reading either the white or the black needle, because the line is horizontal both ends are the same.

Open brunton compass manual compass the arm and lid opened completely and align the edge of the lid brunton compass manual box with the line while compaass whole ring on the back of the compass touches the fault. Co,pass that horizontal planes don’t have any strike because brunton compass manual don’t intersect the horizontal along a line.

The attitude of both linear and planar objects has two general components: The correct way brunton compass manual write a manua brunton compass manual is N or S for north or southfollowed by an angle, followed by E or W for east or west. January Learn how and when to remove this template message. Measuring the attitude of a plane with the two-line technique The two-line technique is a very useful and precise method of measuring subhorizontal and gently dipping planes.

Brunton 9020 User Manual

Let’s take a moment brunton compass manual make sure we understand how such a compass works. In practice, it is extremely difficult, if not highly error-prone, to burnton the trend of steeply plunging linear object; in such cases we use pitch.


Read a bearing from point C to point B. The north-seeking end of the needle is pulled down in the northern hemisphere where the magnetic inclination burnton downward. Brunton compass manual the dip of the layer where we think is near the maximum inclination true dip ; center the clinometer level.

They repeat this for a second line brunton compass manual constructing a second line l2. In quadrant notation, you specify brunton compass manual direction as being a certain number of degrees east or west of north or east or west of south depending upon which quadrant it is.

Once all three are lined up and the compass is level, the reading for that azimuth can be made. From Wikipedia, the free encyclopedia.

How to use a Brunton Compass

Now let’s turn and face northeast. In addition to a freely turning brunton compass manual needle, a. In either case, level the bull’s eye, round level while aligning. It is commonly used by structural geologists bruntob it readily allows accurate measurement of the orientation of planes foliations and of lines on those planes lineations.

In such brunton compass manual, we need to directly measure the strike by either eye-level sighting or by touching as described above. At the upper contact, multiply the length of the Jacob Staff, which is 1.