Professional quality bore gauge with depth measurement capability - Zero setting required before use to establish a reference measurement - Measures bore diameters from 2 to 6 inches with a precision of 0.001 inch - Super-precision design uses two-point contact to accurately read bore size and detect geometric issues such as ovality and conicity - Clear, reliable readings for quality control and inspection tasks Key benefits - Accurate dimension verification for drilled or bored holes - Quickly identify deviation from nominal size and geometric defects - Simple setup with a dependable zero reference for repeatable results - Robust tool suitable for professional machining and inspection environments Typical use scenarios - Machining QC: verify drill and bored hole diameters to ensure parts meet exact specifications during setup and production - Engine and automotive service: inspect cylinder bores and other critical holes for ovality, taper, or out-of-round conditions - Hydraulic and pneumatic components: check bore sizes and consistency to prevent leaks and ensure proper fitment Why this tool stands out - Combines high-precision diameter measurement with depth measurement capability - Two-point contact provides reliable detection of ovality and conicity, improving defect detection - Wide measurement range (2–6 inches) with fine 0.001 inch resolution for tight tolerances - Professional-grade construction and straightforward zeroing workflow for repeatable results