A very typical task we do when building scale models, especially when creating scale buildings and other elements for dioramas, is engraving bricks with different tools.
It is (IMO) a tedious task, as we have to engrave tens of parallel lines. And making sure they are straight and equidistant is important if we want them to be realistic.
This tool was created for precisely that purpose. With five blades separated by 1 or 1.5 mm (depending on the model), you can be sure that any lines you create will have the appropriate width, and it will be maintained throughout the whole piece.
We have to prepare each shipment individually as they are ordered, so allow us 3-4 weeks for it to arrive in the USA/Canada (to be safe) and 3-6 weeks rest of the world, though they are usually delivered much faster.