Direct Answer • Key Takeaway
F Is the Focal Length of the Objective, D Is the Horizontal Distance of the Staff from the Vertical Axis of the Instruments. the Horizontal Distance Between the Axis and the Staff Is Given by the Following Equation.
F Is the Focal Length of the Objective, D Is the Horizontal Distance of the Staff from the Vertical Axis of the Instruments. the Horizontal Distance Between the Axis and the Staff Is Given by the Following Equation.
F Is the Focal Length of the Objective, D Is the Horizontal Distance of the Staff from the Vertical Axis of the Instruments. the Horizontal Distance Between the Axis and the Staff Is Given by the Following Equation.