Features: Achieve precise measurements with our Dials Bore Gauge, or high accuracy tasks requiring precisions up to 0.001 inches. Crafted from steel, this reliable gauge features clear, easy to read scale and user friendly operation. For technicians and engineers in the fields of machining, manufacturing, and laboratory work. Perfectly suited for part measurement, assembly tuning, and quality inspection, providing accurate data support. Enhances your toolkit with this essential measuring instrument, ensuring superior performances in demanding environment. Specifications: Material: Steel Resolution: 0.001in(0.025mm) Measurement: 0-0.5in(12.7mm) Total Length: About. 106mm/4.17in Diameter: About. 58mm/2.28in Note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color. Package includes: 1 Set Dials Bore Gage