The MST Gills Nomogram Marker (Item #AR0126) is a purpose-built ophthalmic instrument in the Calipers, Gauges & Markers portfolio. Designed around its specific working geometry, it features 6mm and 8mm chord length 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.