This fully adjustable parallel measuring instrument is designed for accurate, repeatable assessment of abutments and surrounding mucosal tissue in the laboratory. Its modular design and analytical features make it a practical tool for routine prosthetic and removable appliance workflows. Key benefits Full adjustability: Multiple degrees of adjustment allow precise alignment to complex geometries and undercut areas. Modular versatility: Includes seven interchangeable spindles to adapt to different measurement tasks and workpiece sizes. Integrated analytical rod: Builtin rod improves reference stability for consistent, repeatable checks. Mobile documentation compatibility: Works with a variety of Mobile Phone Holders to support photographic documentation and digital records. Detailed observation capability: Enables drawing observation lines and clear visualization of abutment numbers, distribution, snap ring positioning, large connectors, and specific dimensions. Supports denture fit planning: Helps evaluate soft tissue undercuts and define base extension boundaries to guide fixation and seating considerations. Function and compatibility Purpose: Adjustable parallel measuring instrument for precise checks of undercuts on abutments and adjacent mucosal tissue. Compatibility: Designed to accept a variety of Mobile Phone Holders for documentation and review workflows. Modular components: Seven interchangeable spindles allow configuration for a range of clinical models and laboratory parts. Analytical feature: Integrated analytical rod provides a stable reference for measurements and line drawing. Practical use scenarios Laboratory assessment of implant and abutment models: Accurately check undercuts, mark observation lines for abutment count and distribution, and verify snap ring clearances before proceeding with prosthetic components. Denture base planning: Evaluate soft tissue undercuts and define extension boundaries to inform base design and seating considerations during denture fabrication. Case documentation and review: Mount a smartphone to record measurement positions, capture observation lines, and share consistent images for team communication and case records. What makes it stand out Combines adjustability, modular spindles, and an analytical rod in one instrument to streamline measurement and observation tasks. Designed to integrate with common mobile documentation setups to improve traceability and communication. Focused on precise, repeatable checks that support detailed assessment of abutment geometry and surrounding soft tissue features. This instrument is intended for laboratory use where precise assessment of undercuts, component positioning, and base boundaries is required.