Devices, Systems, and Methods for instrument verification or checking the accuracy of the registration of the instrument for use with surgical robot systems. The surgical robot system may include a robot having a robot base, a robot arm coupled to the robot base, and an end-effector coupled to the robot arm. The end-effector, surgical instruments, the patient, and/or other objects to be tracked include active and/or passive tracking markers. Cameras, such as stereophotogrammetric infrared cameras, are able to detect the tracking markers. Instruments having relatively large tips may be used for verification of the instrument.
