Machinists and precision workers, this Clockwise Tools digital dial indicator is seriously accurate for all your measurement needs! With a 0-1 inch (25.4mm) measuring range and incredible 0.00005 inch resolution, this thing picks up measurements most indicators would miss. The extra large 1.6x0.7 inch LCD screen makes reading numbers easy even in low light conditions. It automatically shuts off after 5-7 minutes to save battery, though note it resets to zero when turned back on. You get both flat back and lug back mounting options included (with 6.5mm hole size), plus a 3/8 inch stem diameter with 4-48 UNF threaded tip. The anti-dust cap is a nice touch for keeping the contact point clean between uses. Accuracy is rated at ±0.0002 inch (±0.005mm), which is more than precise enough for most machining and quality control applications. The RS232 data transfer capability means you can connect it to data collection systems if needed, and it even comes with a professional certificate. The build quality feels solid - this isn't some cheap import that'll fail after light use. Whether you're setting up machinery, checking runout, doing quality inspections, or any precision measurement work, this digital indicator gives you the accuracy and features you need at a very reasonable price. Much easier to read than analog dial indicators, and the inch/metric conversion at the push of a button is super convenient when working with different measurement systems. Just a really well-designed, professional-grade measuring tool that delivers where it counts.