Braunstein Caliper (RI-00651) is a specialized surgical instrument primarily used in ophthalmology, particularly in vitreoretinal surgery. Braunstein Caliper is designed with a double-ended configuration, featuring U-shaped tips of varying sizes, to accurately mark sclerotomy sites for surgical procedures. This instrument is crucial for precise surgical planning and execution. Typically come in two standard sizes: 3.0mm / 3.5mm and 3.5mm / 4.0mm.