Starrett 780XTZ-312 Electronic Internal Micrometer – 12021

Starrett 780XTZ-312 Electronic Internal Micrometer (6-8mm)

The Starrett 780XTZ-312 is a premier Electronic Internal Micrometer engineered to deliver elite operational performance for characterizing small-bore stimulus in precision engineering audits. By addressing the requirement for surgical accuracy in restricted-access internal spaces, this instrument utilizes a 1/4-5/16″ (6-8mm) range to effectively reveal dimensional nuances. The metrological architecture of the 780XT series ensures absolute traceability, providing high-fidelity oversight with ground 3-point carbide contacts for exhaustive validation of tight-tolerance internal bores in electronics and medical device manufacturing.

Built for industrial longevity and professional-grade dimensional validation, the 780XTZ-312 is a high-trust solution for managing stimulus in laboratory and precision shop audits. Its technical sophistication is centered on its IP65 environmental protection and extended travel logic, establishing it as a professional-grade metrology asset for certifying bore integrity under shop floor conditions. Providing the repeatable results and rigorous verification necessary for professional-grade diagnostics, this micrometer features a high-visibility digital display and self-centering contacts, serving as the definitive tool for technicians requiring a durable, high-resolution solution for small-diameter characterization.

Technical Specifications & Metrological Data

• Dimensional Fidelity: High-resolution characterization of internal diameters from 1/4″ to 5/16″ (6-8mm).
• Environmental Logic: IP65-certified protection against liquid penetration and particulate ingress.
• Sensing Intelligence: Self-centering 3-point carbide contact head for consistent, true readings.
• Metrological Precision: Advanced ground contact points facilitate rapid and stable instrument seating.
• Mechanical Logic: Extended travel capability minimizes the need for frequent anvil configuration changes.
• Durability Metrics: Designed to maintain accuracy in environments featuring coolant and abrasive dust.
• Kit Integrity: Furnished as a ruggedized standalone unit for high-accuracy shop floor metrology.