What is the scale on the upper elevating screw plate graduated in?

The scale on the upper elevating screw plate is graduated in 50-mil increments. This graduation allows for precise adjustments to the elevation during firing, ensuring accuracy at various distances. A 50-mil increment is practical for quick adjustments while providing enough detail for fine-tuning the aim. Understanding this graduation is critical for effective marksmanship and fire team operations, as it directly affects the trajectory and precision of the projectile being fired. In terms of operational effectiveness, accurate elevation adjustments are essential for achieving the desired impact on target, which is why this specification is well-documented and emphasized in training materials. The other options do not align with the standard increments specified, which is why they do not represent the correct scale used.