High Precision 505 Series Dial Vernier Caliper for Accurate Measurements

High Precision 505 Series Dial Vernier Caliper for Accurate Measurements. Equipped with original precision dial transmission gears for seamless sliding without stuttering or needle jumping. It maintains consistent accuracy after repeated long-term measurements and prevents. 0.02mm per division for easy pointer reading; no vernier math needed for OD, ID & depth measurements. The main scale and measuring jaws are made of quenched high-hardness stainless steel. Resists abrasion, cutting fluid and rust, ideal for long-term use in oily, humid workshop environments. Composite dual jaws enable measurement of outer diameters, inner diameters, steps and depths with a single tool, eliminating part changes and greatly boosting workshop inspection efficiency. Thickened protective casing with built-in shock absorption safeguards the dial and internal gears against accidental drops, suitable for rough machining, sheet metal and mold workshops. A tightening knob locks the sliding vernier after measurement. The pointer stays fixed when moving workpieces, eliminating secondary reading errors and enabling easy single-operator measurement. A zero-set knob under the dial lets users quickly recalibrate the needle to zero after wear, easily correcting zero offset and sustaining long-term measuring precision. Permanent black-filled etched scale markings resist fading and abrasion. The high-visibility yellow dial face delivers legible readings under bright workshop light or dim workstations. Comes with factory calibration certificate; factory-verified accuracy for QC labs & compliant quality inspection. Three mainstream measuring ranges available; compatible with small hardware, large castings and mold plates for machining, auto repair and manual measurement.