The MST Donnenfeld LRI Marker (Item #AR0132) is a purpose-built ophthalmic instrument in the Calipers, Gauges & Markers portfolio. Designed around its specific working geometry, it features 1, 2 clock hours (30, 60 degrees) and axis marking blades. Titanium with axis marking blades. Rotating ring with 10 degree increments. Round, knurdled handle. Overall length: 120mm. 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.