Aperture — Precision Conical Feeler (measuring range 3–15 mm, accuracy 0.1 mm) Key benefits Accurate internal measurements: Provides precision readings (0.1 mm) for inner diameters and holes so you can trust the fit and function of parts without timeconsuming trialanderror. Fast, reliable inspections: The conical shape lets you quickly determine diameter at different depths and locations, reducing measurement time on repetitive tasks. Built to last in workshop conditions: Solid stainless steel construction resists wear and deformation, maintaining accuracy after repeated use. What it does and why you need it Measures inner diameters and hole sizes across a variety of materials with a fine resolution of 0.1 mm, making it ideal when precise clearances matter. The 3–15 mm range covers many smallbore applications, so you can use one tool instead of multiple gauges. Compact and lightweight for easy handling and transport; fits into tool kits and pockets without sacrificing durability. Important attributes Function: Conical feeler for internal diameter and hole measurement. Measuring range: 3–15 mm. Precision: 0.1 mm. Material: Durable, wearresistant stainless steel. Design: Compact and portable for convenient field or use. Practical use scenarios Quality control on thinwalled parts: Quickly verify hole diameters on pressed or spun metal parts to ensure consistent wall thickness and fit. Plastic pipe and tubing checks: Measure internal diameters on smallbore plastic pipes and fittings to confirm sizing before assembly. Precision engineering and maintenance: Inspect holes and bores on mechanical components where accurate clearance is critical for performance or safety. Why professionals choose Aperture Reliable accuracy for repeatable results. Robust stainless steel construction that retains shape and precision under frequent use. Simple to use and carry, helping technicians, machinists, and inspectors complete measurements faster and with confidence.