Guns without dispart sights cannot be layed at elevations below the clearance angle.
This was of wood; the third sight, also of wood, was for guns without a dispart patch, which consequently could not be layed at elevations below the dispart.
It was ranged by varying the charge, and layed for line by means of a line and plumb bob Laying aligned on a picket.
This enabled the gun to be layed from some little distance behind, so that the layer could be clear of recoil, and continuous laying was thus possible.
This form of laying is of two kinds: (I) that in which the gun can be layed for direction over the sight on the target itself, or on some aiming point close by, but from Indirect indistinctness or other causes quadrant elevation is preferred; and (2) that used when the target is completely laying.