Features Convenient Operation: Comfortable handle allows you to operate the caliper more conveniently, equipped with mm/inch measurement transfer function. Widely Used: The large LCD display shows clear and intuitive results, and is widely used to measure the inner diameter of various machining. Durable: This internal caliper uses aluminum alloy probe and chrome-plated treatment to make the meter more durable, wear-resistant and corrosion-resistant, and has a long service life. Seiko Manufacture: This internal caliper has exquisite workmanship, each of our products is carefully designed and manufactured, and we have a strict quality control system to ensure product quality and quality stability. Excellent After-sales Service: We provide you with high-quality after-sales service. If you have any questions, please feel free to contact us, and we will deal with it for you as soon as possible. Specification: Item Type:Internal Caliper Material: Aluminium Alloy Probe Battery:1 x CR2030 3V Button Cell(Not Included) Measuring Range:12.7-165mm Resolution:0.1mm Package List: 1 x Electronic Digital Internal Caliper Package List 1 x Electronic Digital Internal Caliper