The MST Castroviejo Caliper (Item #AR0150) is a purpose-built ophthalmic instrument in the Calipers, Gauges & Markers portfolio. Designed around its specific working geometry, it features straight blades. Measures 0mm-20mm in 1.0mm increments. Screw-locking mechanism. Overall length: 89mm. This combination of thoughtful design details and clearly defined specifications helps surgeons quickly identify the configuration that best fits their preferred technique and procedural needs.