The Mitutoyo 050084-10 depth base attachment has a 4" base length and is suitable for use with Mitutoyo 4 to 8" (100 to 200mm) vernier and dial calipers (sold separately). The knurled locking clamp holds a caliper securely. The base is made of steel and the measuring face is ground for flatness. This depth base is suitable for precise measurement in a variety of manufacturing, machining, and mechanical engineering applications.

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.

Mitutoyo manufactures precision measuring tools, metrology equipment, and related systems. The company, founded in Tokyo in 1934, formed Mitutoyo America Corporation in 1963 with headquarters in Aurora, IL.