If you're into machining or precision work, this Türlen indicator set is exactly what you need for accurate measurements. The test indicator features 7 jewels and has a 1-3/16\ dial that's super easy to read with crisp 0.0005\ graduations and 0.030\ travel - it responds to the lightest touch! The dial indicator has a larger 2-1/4\ face with 0.001\ graduations and 0.1\ per revolution, built to AGD specifications for reliability. But the real star might be the mini magnetic base with fine adjustment - it has 50 lbs of holding power and reaches 7.5\ overall, perfect for tight spaces where bigger bases won't fit. The central locking mechanism with one-knob control makes setup quick and secure. Everything comes in a fitted case to keep your precision tools protected. Whether you're setting up machinery, checking runout, or doing quality control, this professional set gives you the accuracy and convenience you need at a really reasonable price.