This paper presents the results of lab experiences with a proposed Neurosurgery Assisting Device. One test mode is discussed as performed to give the results in terms of roll degrees, acceleration, and power consumption. The test performance of a prototype is used to identify requirements for a new version of the neurosurgery-assisting device prototype. Problems in fixation and correct distance performance are also discussed with the lab experience in order to better size the latest version that is proposed with a conceptual design.