Brunton Pocket Transit, Инструкция по эксплуатации, Страница: 3 / 15

2.8 Vernier (Fig 5)
The adjustable vernier is used in
inclination measurements.
2.9 Long Level (Fig 5)
The long level for inclination meas-
urement. Adjust the long level using
the vernier adjustment - 2.11.
2.10 Circle Adjusting Screw (Fig 6)
With a screw driver, rotate the gradu-
ated circle by turning the circle
adjusting screw.
2.11 Vernier Adjustment (Fig 6)
Use the vernier adjustment to adjust the vernier and long level for inclination measurements.
2.12 Ball & Socket Tripod Mount (Fig 6)
The slots on both sides of the body are for mounting to an optional Brunton tripod.
2.13 Alidade Mount -- Com-Pro Models Only (Fig 6)
The circular extension with slots, located on the bottom of the body, is for the attachment of an
optional Brunton alidade (protractor). Only the Com-Pro models have this feature.
The Earth is completely surrounded by a magnetic field, and an unobstructed magnetized
object will orient itself with the earth’s magnetic north and south poles. Magnetic declination
(variation) is the difference between true geographic north (north pole) and magnetic north (in
northern Canada), with respect to your position. It is important to note magnetic declination at
your position, because magnetic declination varies and fluctuate slowly at different rates,
around the world. (Fig 7, p.5)
2.2 Graduated Circle (Fig 5)
In combination with the needle, the 1° graduated circle allows accurate 1/2° azimuth readings
on both the Degree ( 0° through 360°) and Quadrant (0° through 90°) graduated circles.
2.3 Zero Pin (Fig 5)
The zero pin is the pointer used for magnetic declination adjustment. If no adjustment is
necessary, the pin should point at 0°.
2.4 Large Sight w/ Peep Sight (Fig 5)
The large sight and the attached peep sight are used for precise azimuth measurement.
2.5 Small Sight (Fig 5)
Attached to the cover, the small sight is used for precise bearing and inclination sighting.
2.6 Mirror (Fig 5)
Located on the inside of the cover, the mirror and mirror center line are used for accurate
azimuth measurements, when using the transit as a prismatic compass.
2.7 Round Level (Fig 5)
Use the round level to level the pocket transit for azimuth measurement.
Figure 5
Figure 6
3 -- Magnetic Declination
2.10
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.12
2.11
2.13
Com-Pro Model Shown
4 3