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Last Modified: Oct 14, 2019

Part Number 12972477 Graphical Firing Scale

National Stock Number: 1220-01-414-6399

12972477 Cross Reference Parts

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12972477

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12972477

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Summary Information (click on this NSN number for detailed information: 1220-01-414-6399)

Definition: Graphical Firing Scale, also referenced with federal logistics item name code 21860: A device designed in the form of a slide rule, having one or more scales of varying ranges, on either surface, and a plastic cursor with a matte to receive pencil markings of range correction. it is used with various types of ground and sky-sweeper weapons to determine quadrant elevation, angle of sight, or drift, and to calculate the trajectory of a projectile in relation to a target. it may contain scales for yards to meters conversion and gage points which are used in conjunction with the cursor and range scale to convert data given in meters to yards. scales may be in mils for determining high angle fire, time of flight, deflection shift, and the like.
Federal Supply Class (FSC): 1220
NIIN: 01-414-6399 (014146399)
NMF Description: OPTICAL GOODS OR INSTRUMENTS NOI
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