Easy to Use - The spindle and anvil are precisely aligned, allowing for smooth and consistent movement during measurement. Ratchet-stop Mechanism - The ratchet stop thimble featured on this product ensures precise and consistent measurements. Its chrome finish on both the thimble and sleeve offers resistance against rust and minimizes glare. Outside Micrometer Set - Measuring Range: 3 inch-4 inch, The of this outside micrometer is 0.0001 inch. Measuring Tool - Outer micrometers are capable of measuring to extremely small increments, allowing for precise fitting, machining, and quality control inspections, ensuring that products meet specified tolerances and standards. Wide Applications - Outside micrometers are commonly used in manufacturing, engineering, quality control, and other applications where precise measurements are essential., Weight: 1.0582188576 pounds, Manufacturer: Kueohse