Comparison Kraissmann 16 4D-LLA 25 RG vs Kraissmann 12 3D-LLA 25 RG

The number of horizontal projections that a laser level can give out during operation. As in the case of vertical ones (see above), this parameter does not describe the number of geometric planes, but the number of individual work items for projecting horizontal lines. In this case, the projected plane is usually one, and several elements for it may be provided in order to expand the sector covered by the device. For example, a traditional laser level (see "Type") with 4 horizontal projections may be able to cover a full circle of 360 ° — like a rotary (see ibid), but at a significantly lower cost. Of course, there is no need to talk about a full-fledged replacement, because. the power and range of such devices are also not very high; but for work in rooms with distances of several metres, where at the same time wide coverage is important, the usual model with several projections is often preferable to the rotational one. Rotary levels themselves, by definition, have one horizontal projection.