Precision Fastener Gauge — durable, accurate, easy to use Key benefits Accurate measurements for both imperial and metric fasteners, including coarse and fine threads — reduces trial-and-error and speeds up repairs and assembly. Durable construction and quality materials provide long service life, lowering replacement costs over time. Simple, cost-effective design that delivers professional-level results for hobbyists and technicians alike. What it does Quickly identifies diameter, thread pitch (coarse and fine), step sizes and length for most nuts and bolts. Compatible with both imperial and metric systems so you can work across different fastener standards without extra tools. Heavy-duty gauge construction maintains accurate positioning and repeatable results. Material and build Made from high quality plastic and produced through a precise forging and machining process to ensure dimensional accuracy. High-temperature hardened finish increases wear resistance and provides a non-slip surface for reliable handling. Built to withstand repeated use while maintaining precise measurements. Who it’s for Home DIYers who need quick, dependable fastener identification for repairs and projects. Automotive and bicycle technicians verifying thread types and sizes during maintenance. Assembly shop workers and maintenance crews who must match replacement fasteners quickly and accurately. Typical use scenarios Replacing a bike bolt: identify whether the fastener is metric or imperial and match the thread pitch to order the correct replacement without trial fittings. Automotive maintenance: determine coarse vs. fine threads and measure bolt length to select the correct fastener for brake, engine, or body repairs. Home project or furniture repair: check nut and bolt sizes before buying replacements or reassembling parts to avoid mismatched hardware. How to use (quick) Align the fastener with the matching diameter slot, check the thread against the coarse/fine indicators, then read the length/step markings to confirm size. Reliable, practical, and built for repeated use — this gauge simplifies fastener identification and helps you get the right part the first time.