Like the WPI Rat Stereotaxic Instruments, the WPI Mouse & Rat Stereotaxic Instruments line has larger laser engraved vernier scales (accurate to 100 um), 80 mm of ventral-dorsal, medial-lateral and anterior-posterior travel, absolute lock at 90° ventral-dorsal and brass-bushings for electrical grounding. It is available as a digital or motorized model. A neonatal rad adapter is also available for the stereotaxic frames.