Deep Throat Micrometer, 0.5" Range, 16" Reach, .0005" ResElectronic Thickness Gage with Mitutoyo Indicator Deep Throat Thickness Gages are precision measuring tools used to measure the thickness of materials in hard to reach or confined areas. They are designed with an extended reach or "throat" that allows them to measure the thickness of materials in areas where traditional thickness gages cannot reach. This Thickness Gage with its 16" Deep Throat is the perfect gage for measuring the thickness of an