TM-9-6675-262-10
AIMING CIRCLE M2 W/E AND M2A2 W/E
TECHNICAL MANUAL; OPERATOR MANUAL
DECEMBER 2013
TM-9-6675-262-10 - Page 13 of 68
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EQUIPMENT DESCRIPTION AND DATA
EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES
Your Aiming Circle is used to measure azimuth and elevation angles of a
ground or aerial target with respect to a preselected base line.
The operating
instructions in this manual apply to both the M2 and M2A2 Aiming Circle.
DIFFERENCES BETWEEN MODELS
The maximum elevation range has been increased from 800 Mils on the M2 model to
1100 Mils on the M2A2 model and is visually identifiable by locating the elevation scale
(Figure 1, Item 2) on the Aiming Circle and reading the maximum elevation printed on
the scale. The Elevation Knob (Figure 1, Item 1) on the M2A2 is visually identifiable by
the cross-hatched design on a round adjusting knob at the top of the instrument. The
body of the M2A2 also differs slightly and can be visually identified as having a sloped
Compass Compartment window assembly (Figure 1, Item 3), related to the increased
range of motion necessary to accommodate the increase in elevation range of the
Elbow Telescope assembly.
Table 1. Differences Between M2 and M2A2
M2
M2A2
Weight, Aiming Circle
with Cover
9Lbs.
9 Lbs.
Weight, Aiming Circle
with Equipment
21 Lbs.
21 Lbs.
Azimuth Rotation
Unlimited
Unlimited
Elevation (Maximum)
800 Mils
1100 Mils
Depression (Maximum)
400 Mils
400 Mils
Telescope Power
4 Power
4 Power
Field of View
10 Degrees
10 Degrees
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