Abstract: A laser beam, directed by mirrors at a conveyor belt with overlapping sheet products, is reflected against at least two measuring cells. Each paper edge passing the point of reflection is shown in the signals from the measuring cells, and by compositing the signals in various ways in a computer, disturbances due to varying amounts of color, thickness and form of the edges, folds etc. can be eliminated, producing a curve which exactly shows how many products have passed on the belt. Using a laser as a light source provides a parallely focusable, very powerful light beam, which makes it possible to count thin, tightly spaced and heavily colored products.