Measurement accuracy perception and user guiding for manually driven aacmm

An articulated arm coordinate measuring machine comprising a set of sensors, a probe for approaching an object point, and a set of members connecting the probe to a base, the members comprising links and joints, wherein:

• the probe is configured:
• to be moved at least partially manually by an operator holding and guiding the probe and/or a handheld member of the set of members, and
• to measure probing data corresponding to an interaction between the probe and the object point,
• the coordinate measuring machine is configured:
• to derive a pose of the probe based on sensor data provided by the set of sensors, and
• to provide coordinate data of the object point based on the probing data and the pose of the probe,
• the coordinate measuring machine is configured:
• to obtain target data representing a target state of at least one state variable of the coordinate measuring machine,
• to derive actual data representing an actual state of said at least one state variable based on the sensor data, and
• to continuously monitor the actual data,
• the coordinate measuring machine comprises:
• an accuracy-assessment-functionality being configured to provide accuracy-perception-data based on the continuously monitored actual data and the target data during the guiding of the probe and/or the handheld member, and
• a user-support-functionality being configured to provide a support action during the guiding of the probe and/or the handheld member based on the accuracy-perception-data.