Compact three-size gauge set with inch and millimeter measurements - A-2nd .014 in (0.36 mm) - D-3rd .021 in (0.53 mm) - E-1st .010 in (0.25 mm) Unit reference: inches and millimeters for cross-system checks Key benefits - Provides precise, repeatable small-diameter measurements for accurate fitting and gap checks - Easy to read and compare sizes quickly during setup or inspection - Small, portable, and durable for on-site or workshop use Applications - Verifying and selecting diameters in delicate assemblies or modifications - Instrument setup or repair tasks that require small string or wire gauges - Hobby projects and electronics where precise diameters are required Why this set stands out - Clear dual-unit sizing supports multiple tools and standards - Includes three commonly needed small-diameter gauges in a compact format