A. Needle
The needle is induction damped, which allows the needle to seek magnetic north and come to a complete rest in a minium amount of time, without accuracy degradation.
B. Graduated Circle
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.
C. Zero Pin
The zero pin is the pointer used for magnetic declination adjustment. If no adjustment is necessary, the pin should point at 0°.
D. Vernier
The adjustable vernier is used in inclination measurments.
E. Round Level
Use the round level to level the pocket transit for azimuth measurement.
F. Long Level
The long level for inclination measurment. Adjust the long level using the vernier adjustment (L).
G. Small Sight
Attached to the cover, the small sight is used for precise bearing and inclination sighting.
H. Mirror
Located on the inside cover, the mirror and mirror center line are used for accurate azimuth measurements, when using the transit as a prismatic compass. (Note: The image in the mirror is of the ceiling of our shop, it is a flawless mirror otherwise.)
I. Large Sight with Peep Sight
The large sight and the attached peep sight are used for precise azimuth measurement.
J. Circle Adjusting Screw
With a screwdiver, rotate the graduated circle by turning the circle adjusting screw.
K. Ball and Socket Tripod Mount
The slots on both sides of the body are for mounting to an optional Brunton tripod.
L. Vernier Adjustment
Use the vernier adjustment to adjust the vernier and long level for inclination measurments.
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