The bases are available in a choice of 2., 5, 3, 4, or 6 long, and all measuring surfaces of these units are hardened, ground, and lapped for durability and accuracy. Starrett Depth Gauge Starrett 440L Micrometer Depth Gage, Head And Base Only, With Lock Nut Micrometer Parts These gauges include 1/8 diameter measuring rods to cover the intended range. The company, founded in 1880, is headquartered in Athol, MA. Vernier scale for precise measurements in fine units Measurement range of 0 up to 12, and resolution of 0., 001 The Vernier scale enables precise measurements in fine units. Gauge position is read from a graduated scale, dial, counters, or an electronic display., The L., S. Depth gauges are precision measuring instruments used to determine the depth of any shape that has a step, groove, or slot. STARRETT MICROMETER DEPTH GAUGE #445 - Bentley & Associates, LLC Starrett Depth Micrometer with Combination Ratchet and Speeder, Ring-Type Locknut, Ratchet Stop and Locknut - 0-6 Range, .001 Graduation, 2-1/2 Base Length - 6 Rods - 440Z-6RL Bases and measuring surfaces are hardened, ground, and lapped for durability and accuracy Best Depth Micrometer: Top 10 Choices in 2025 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. Ring-type knurled lock nut and combination ratchet and speeder for precise measurements
