NSN 1220-00-983-3921

Part Details | GRAPHICAL FIRING SCALE

1220-00-983-3921 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.

Alternate Parts: 8565636, 8565636, 8565636, 1220-00-983-3921, 00-983-3921, 1220009833921, 009833921

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12JAN 01, 196200-983-392121860 ( SCALE, GRAPHICAL FIRING )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1220-00-983-3921
Part Number Cage Code Manufacturer
856563684010ALLEGHENY PLASTICS INC
856563605WA2COMMANDER USAF ARTILLERY CENTER
856563619200US ARMY ARDEC RDECOM
Technical Data | NSN 1220-00-983-3921
Characteristic Specifications
GENERAL CHARACTERISTICS ITEM DESCRIPTIONDOUBLE-FACE TYPE; WOODEN BODY; W/CURSOR,PLASTIC; SCALE DATA,SCALES GRADUATED IN INCREMENT OF PROPELLING CHARGE,5.00 TO 14.50 INCREMENT,5.00 TO 25.50 INCREMENT,26.50 TO 41.00 INCREMENT,27.25 TO 41.00 INCREMENT,RANGE OF SCALES,SCALES GRADUATED IN METER,600 TO 2500 METER,800 TO 5500 METER,800 TO 6500 METER,3400 TO 6200 METER RANGE OF SCALES,SCALES GRADUATED IN MILS,5.5 TO 9.5 MILS,5.5 TO 42.0 MILS,6.5 TO 42.0 MILS,13.5 TO 55.0 MILS,31.5 TO 36.5 MILS,33.5 TO 49.5 MILS,37.5 TO 43.5 MILS,39.5 TO 57.5 MILS,57.5 TO 68.5 MILS,RANGE OF SCALES,SCALES GRADUATED IN SECONDS,14.0 TO 33.0 SECONDS,15.5 TO 36.0 SECONDS,17.5 TO 30.0 SECONDS,29.0 TO 36.5 SECONDS,31.0 TO 39.5 SECONDS,RANGE OF SCALES; W/MATTE SURFACE FOR PENCIL CORRECTIONS; W/CASE