Patent ID: 7042561
Filing Date: 2006-05-09
Classification: G01B

Abstract:
1. A system for an essentially plane-parallel alignment of a first plane with reference to a second plane, wherein the system comprises: (a) a device comprising a main part and a light source and a plurality of contact points, wherein said contact points are connected to the main part and disposed to attach the main part to the first plane, and said light source is connected to the main part of the device in a position to emit a scattered light beam said scattered light beam having a first scattering angle in one direction, and smaller scattering angles in other directions, whereby the scattered light beam is in a scattering plane, wherein the scattering plane is essentially parallel to the plane of the first plane when it is attached to the device via the contact points; and (b) an indicator device to be arranged on the second plane.