Brunton GeoTransit, Operator'S Manual

Congratulations on your purchase of the finest pocket transit instrument in the world.
The Brunton GEO Transit is not just a compass.  It combines a surveyor’s compass, pris-
matic compass, two inclinometers, hand level and a plumb into a single instrument.  

Even though the GEO Transit is made rugged and durable to withstand the rigor associ-
ated with outdoor use, care must be taken to assure long-life of your instrument.  Avoid
impacts, dropping, extreme temperatures and store  the Brunton GEO Transit in its case.

Orientation provides a description of important
pocket transit parts.  A detailed description of its
operation is provided throughout the manual.

Opening The GEO Transit

Position the GEO Transit so that the flat cover
faces up with the small window positioned away
from you.  Unlatch the cover from the base.  
(Fig 1)

1.1  Round Level  (Fig 2)

For accurate azimuth measurement, dip direction and trend measurements, center the bubble
in the round level.

1.2  Needle  (Fig 2)

The needle is attached to a rare earth magnet which is induction damped, allowing the needle
to seek magnetic north and come to a complete rest in a minimum amount of time.  

1.3  Graduated Circle  (Fig 2)

In combination with the needle, the 1° graduated circle allows for azimuth readings that are
accurate to 1/2 degree.

1.4  Long Level  (Fig 2)

The long level is for inclination measurement.  For accurate inclination measurement, center
the bubble in the long level using the vernier adjustment (section 1.14).

1.5  Rare Earth Magnet  (Fig 2)

Brunton has incorporated a cast NdFeB, rare-earth magnet which seeks magnetic north very
quickly and allows for faster needle settling.

1.6  Zero Pin  (Fig 2)

The zero pin a pointer used for magnetic declination adjustment.  If no adjustment is 
necessary, the pin should point at 0° on the azimuth ring.

1.7  Needle Release Mechanism -- 2-Positions (Fig 2)

Unlocked:

When needle locking adjustment (section 1.15) is unlocked the needle swings 
freely, even when needle release mechanism is pressed.

Locked:

When needle locking adjustment is in the locked position the needle is locked in 
place until the needle release mechanism is pressed.  

(Suggested for Storage)  

1 -- Orientation

2

1

1.3

1.4

1.5

1.2

1.1

1.8

1.7

1.6

1.10

1.9

Figure 1

Figure 2

Flat Cover

Small Window