DECLINATION
OF M2 AIMING CIRCLE
CONSIDERATIONS
_____ Must have known azimuths to at least two markers preferably in opposite directions.
_____ Azimuth markers should be at least 1000 meters from declination station (field expedient 300 meters)
_____ Established by survey in an area free of magnetic distractions
OBJECT | DISTANCE |
Power lines/electronic equipment | 150 m |
Vehicles/rail road tracks | 75 m |
Barbed wire/small metal objects | 10 m |
DECLINATION
_____ Set up and level M2 over declination station.
_____ Upper motion: set known azimuth
_____ Lower motion: sight on azimuth marker
_____ Upper motion: center magnetic needle, read declination constant directly from scale (nearest .5 mil)
_____ Repeat for second azimuth marker (or repeat on first if no second marker available)
_____ Compare the DC; must be within 2 mils otherwise repeat.
Table
of Contents
Firing
Accurately and Safely
Astro
Azimuth Control Technique
NEWSLETTER
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