Brunton Pocket Transit, Инструкция по эксплуатации

Страница: 5 / 15

4. Press left forearm against your waist and steady with right hand.
5. Level compass using round bubble level.
6. Look into the mirror, and bisect the large sight and the object with
mirror center line. (Fig 14)
•
Check that bubble is centered in round bubble level.
7. Read azimuth where the "N" end of needle points at the graduated
circle.
If object is more than 45° above you, open mirror further toward your
body, and adjust large sight so that it leans over the bottom case.
Then repeat the procedures described in 4.2.a.
4.2.b Using "S" End of Needle
Use this method when object is more than 15° below the observer.
1. Hold transit waist high and in your left hand.
2. Open cover away from your body to approximately 45° from level.
(Fig 15)
3. Open large sight, until it leans over the body at approximately 45°. (Fig 15)
4. Press left forearm against your waist and steady with right hand.
5. Level compass using round bubble level.
6. Look just over the large sight, and at the object
through window opening on mirror. (Fig 15)
•
Adjust mirror and large sight so the image of the
large peep sight are bisected by the mirror center
line.
•
Check that bubble is centered in round bubble level.
7. Read azimuth where the "S" end of needle points at
the graduated circle. (Fig 16)
4.3 Using as a Prismatic Compass
Occasionally, objects may interfere with sighting using
tripod using Brunton’s Ball and Socket head. See section 11 for ordering information.
1. Adjust pocket transit for magnetic declination.
• See section 4, Magnetic Declination, for help.
2. Mount transit to the ball and socket head.
3. Open both the cover and large sight, until they extend
parallel to the body. (Fig 10)
4. Flip small sight and peep sight up. (Fig 10)
5. Rotate transit until large sight points at object.
6. Level the transit by centering bubble in round level.
7. Sight azimuth by aligning peep sights with object. (Fig 11)
8. Read azimuth where the "N"
end of the needle points at
graduated circle -- 60°. (Fig 12)
4.2 Azimuth Measurement Waist-Level
This method is often used when object is above or below the
observer.
4.2.a Using "N" End of Needle
This method is often used when the object lies as much
as 45° above, or 15° below the observer.
1. Hold transit waist high and in your left hand.
2. Open cover toward your body to approximately 45°.
3. Open large sight, until perpendicular to the body. (Fig
13)
Figure 10
Figure 11
Object
Figure 14
Figure 13
You
Figure 15
8 7
Figure 12