Dosimeters for measurement of the ambient dose equivalent of a simple structure

The invention relates to a Ortsdosimetervorrichtung (1) with a two diffuser assemblies (2, 3) formed scattering bodies (2, 3). The two diffuser assemblies (2, 3) have at least one alignment means (16, 17) for mutual alignment of the two diffuser assemblies (2, 3) from one another.