T y p e o f M a n u a l . Operator's
Model Number and Equipment Name.
M16 Indirect Fire Plotting Board
M19 Indirect Fire Plotting Board
Purpose of Equipment. The plotting board is an instrument used to compute the deflection,
range, and azimuth for indirect firing of the mortar. The M16 plotting board is used with the
81-mm M29 and the M19 is used with the 60-mm M224 mortar.
Since the M16 and M19 plotting boards are so similar, only one operation and maintenance
procedure will be shown.