A six DOF measurement aid module for determining 3D coordinates of points to be measured of an object surface, comprising a laser tracker for determining the position and orientation of the six DOF measurement aid module. The six DOF measurement aid module has a body comprising an object coupling device with an object interface, configured to couple, via the object interface, alternatively both a handle to the body with a fixed pose and the body to a mobile platform with a fixed pose, a sensor attachment coupling device with a sensor interface-configured to couple alternatively both a sensor attachment effecting non-contact measurement and a sensor attachment effecting tactile measurement to the body with a fixed pose via the sensor interface, and visual markings, which are arranged in a defined spatial relationship in a manner forming a pattern in a marking region on the body.