Starrett 449AZ 6R Vernier Depth Gauge Micrometer Type 0 6 Range 0 001 Graduation 2 5 Base 6 Rods 0 0001 Accuracy

Product DescriptionThe Starrett 449 Vernier Depth Gauges Micrometer Type Inch depending on the model have a measurement range of 0 to 3 or 0 to 6 a resolution or smallest graduation interval of 0 001 with or 0 0001 of accuracy The vernier scale enables precise measurements in fine units The gauges in this series have non rotating blades or flattened probes that are 1 64 wide by 1 8 long and can be used to measure narrow recessions without the blade slipping off of a surface These units include measuring rods to cover the intended range They come with a ratchet and speeder to enable the users to apply uniform pressure and make quick adjustments for precise measurements Depending on the model the bases are either 2 5 or 4 long and all measuring surfaces of these units are hardened ground and lapped for durability and data accuracy These units include a protective case Depth gauges are typically used in manufacturing machining and mechanical engineering Depth gauges are precision measuring instruments used to determine the depth of any shape that has a step groove or slot These gauges often take the form of sliders that travel on a measuring beam or rods are moved to position by hand and then adjusted with a calibrated screw The base of the gauge rests at the top of the shape whose recession is to be measured while the beam or rods extend to the bottom of the recession to determine the measurement Gauge position is read from a graduated scale dial counters or an electronic display The L S Starrett Company manufactures precision measuring tools metrology and testing equipment and saw blade products The company founded in 1880 is headquartered in Athol MA From the ManufacturerThe purpose of this tool is to measure the depth of holes slots shoulders and projections quickly and easily