Dual metric and inch markings for precise measurements across both systems. Includes common plug gaps and clearances, making routine maintenance faster and more accurate. Offset feeler gauge blade enables access to restricted or tight areas where standard gauges cannot reach. Also suitable for ignition points, spark plugs and tappets, providing versatile use across engines and small machinery. Use scenarios - Car maintenance: set spark plug gaps to spec and check ignition point clearance quickly with the dual-scale gauge. - Motorcycle or small-engine work: reach restricted valve tappet gaps using the offset blade for accurate measurements. - General tune-ups: verify and adjust clearances in tight spaces during routine service. Designed for reliable performance, this gauge offers clear dual markings, practical compatibility with common specifications, and a robust layout for precise, repeatable measurements.