2pcs 23 Holes Metal Gauge Block 25-50-75mm, High Strength Hardened Steel Gauge Blocks for Milling Tool

Maintains original accuracy: The steel gauge block maintains its original level of accuracy, even after it has been used extensively or measured repeatedly Applications: The thickness gauge blocks are useful for calibrating the parallelism of machine tables and fixtures Reliable measurement: This parallel gauge block guarantees the reliability and comparability of measurement data under various conditions Easy to maintain and clean: The polished outside is easy to maintain and clean, which helps to enhance the durability of the steel gauge block set High hardness: Slight impacts or friction won't easily harm the measuring tools used for metric gauge blocks set