Features: High accuracy face indicator set with 0.01mm accuracy and strong metal construction ensures reliable measurements from 10 to 18mm for bore gauges and accuracy measurement tool. Features tool without assembly and multiple compatibility with measurement accessories for multifunction applications across various industrial face indicator requirements. designs for professional machinists, quality manage engineers, and maintenance technicians working with tight tolerance machinery component. Optimized for workshop environment including molds manufacturing floor, production line inspections, and low light maintenance areas like undergrounds facilities. Oversized analogs face with clear graduation marking enables easy data reading during extended accuracy measurement tasks in demanding industrial conditions. Specifications: Material: aluminum Box size: about 37x110x242mm/1.45x4.33x9.52inch Package Includes: 1xBore gauges 1xStorage Box note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.