On the 81mm mortar, how many mils is each turn of the traversing handwheel approximately?

The traversing handwheel of the 81mm mortar is designed to allow the gunnery crew to make precise adjustments to the firing direction of the mortar. When a full turn of the traversing handwheel is made, it typically results in an approximate change of 7 mils.

This calibration allows for effective targeting, as understanding the degree of change with each turn of the handwheel is critical for accurate engagement of targets at varying distances. The choice of 7 mils strikes a balance between fine adjustments and operational efficiency, enabling mortarmen to consistently achieve the desired line of fire with minimal time spent on adjustments.

In contrast, the other choices do not reflect the standard calibration for the 81mm mortar's traversing handwheel. Knowing this specific measurement is essential for anyone operating or coordinating the use of the mortar system, ensuring accuracy in fire missions under various combat conditions.