Features: High definitiondigital display screen reads clearly, accurately and quickly, and the digital display screen accurate to 0.01mm can be seenat a glance, and the value is accurately taken; The closed finetunings auxiliary wheel is designed to measure smoothly and improve the measurement accuracy; In the process of testing, any position iscleared, which is convenient for the measurement of relative value and absolutevalue; Tighten the nut locking data, and the topnuts can be tightened to lock the measured data, which is convenient and practical; IP54 double protections waterproof and dustproof design, not afraid of harsh environment, regardless of dust falling, sun and rain, will not affect the measurement accuracy; Zinc alloy shells cover corrosion-resistant and rust-resistant stainless steel thickened ruler body is polishedsmoothly; Metric/English twoway switches between metric andEnglish measurement with onekeys and automatically convert the measurement length;Low energy consumption, long battery life, automatic start-up for measurement, intelligent power saving, and no automatic shutdowns for a long time; Specifications: Material:Stainless Steel Size:Approx.15cm/5.9inch Size:Approx.20cm/7.87inch Size:Approx.30cm/11.81inch Accurate measurement/stainless steel/originchip/automatic shutdowns/long battery life/public-English switching Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Digital Caliper