Outside Micrometer Set - Measuring Range: 3 inch-4 inch, The precision of this outside micrometer is 0.0001 inch. Precision 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. 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 . Easy to Use - The spindle and are precisely aligned, allowing for smooth and consistent movement during measurement. Wide Applications - Outside micrometers are commonly used in manufacturing, engineering, quality control, and other applications where precise measurements are essential. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Material: alloy steel colour: As shown Package Contents: 1 x Outside Micrometer Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.