
Involute Spline Ring Gauges / External Spline Inspection Rings (Go/No Go). Functional Thread Depth Measurement: Engages thread flank for true functional depth, ensuring full fastener engagement. High Precision Accuracy: Resolution down to 0.01 mm / 0.0005 in for critical quality control. Interchangeable Tip System: Library of hardened steel tips covering ISO Metric, UNC, UNF, and custom profiles. Deep Hole Capability: Probes available up to 300mm (12') for deep bore applications. Digital Data Output: USB/Bluetooth connectivity on digital models for SPC integration. Versatile Display Options: Available in Analog (Telescopic) or Digital (LCD) with switchable mm/inch. 12 Months Warranty: Comprehensive 12-month warranty coverage with online technical support.