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The SPI Dial Drop Indicator is an essential tool for precise measurements in production and manufacturing environments. With a range of 0.2 inches and graduations as small as 0.0001 inches, this flat-back indicator ensures accurate readings every time. It features a revolution counter and comes with a certificate of calibration traceable to NPL for added assurance of accuracy. The rigid, forged brass housing is built to last, making it ideal for use in demanding industrial settings. Whether you're measuring thickness, runout, or diameter, the SPI Dial Drop Indicator delivers reliable results with ease.