1.Designed For: The bore gauges are used to measure internal size of work pieces by comparative method, allowing for more efficient and trouble repairs. Made of quality metal material, this dial bore gauge is for use. 2.50 160MM Measurement Range: These series bore gauges are equipped with a good guiding protective bridge which can be self centering exactly and reliably, and measuring range is 50 160mm. Easy to measure, and with high accuracy, which is 0.01. 3.Robust Metal Build for Durability: Constructed from metal materials, this gauge resists wear and maintains calibration under harsh workshop conditions, guaranteeing longevity and reliability. 4.Ease of Operation Storage: User centric design with a clear dial display simplifies readings, while the organized case system promotes tool protection and quick access, streamlining workflow for professionals. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store