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Flashcards in M2 Aiming Circle Deck (7)
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1
Q

What is the declination constant used at Bragg

A

6250 mils

2
Q
List the M2 
Azimuth rotation:
Max elevation:
Max depression:
Magnification:
Field of view:
A
6400mils
800mils
400mils
4x
10*
3
Q
What are the set up distances
High tension power line:
Electronic equipment:
Railroad tracks:
Tanks and trucks:
Vehicles:
Barbed wire:
Mortars:
Helmets:
A
150
150
75
75
50
30
25
10
(Meters)
4
Q

Define declination constant:

A

Clockwise angle between grid north and magnetic north

5
Q

What is the declination station

A

We declinate to determine declination constant of instruments and to correct for local attractions, annual variations and instrument errors

6
Q

How is the remainder calculated

A

Subtract mounting azimuth from declination constant.

6250-4200=2050

If declination constant is smaller than mounting azimuth, add 6400.
Mounting azimuth = 0150
Declination constant =6250
6550-4200=2350

7
Q

4 reasons to declinate

A

1- when aiming circle moved 25mi or more
2- after electrical storm or severe shock to equipment
3- every 30 days
4- when initially received and when returning to maintenance