Disclosed herein is a multi-mesh gear system, such as an epicyclic gear system, in which optimal performance is not load-specific and the same profile modifications can be applied on both flanks of the common gear. The library can store both pre-defined objects and objects that have been created by a user. The user can manage user authentication requirements and other configuration information for the cursor-based GUI. The system utilizes the perimeter receiver fiber optics to determine information regarding the height and angle of the probe with respect to the objecttooth being measured.