The Starrett Depth Micrometers are perfect for measuring the depths of holes, slots, shoulders, and projections can be measured with these fine tools. The satin chrome reading surface is glare-free and resists rust. Our Starrett Depth Micrometers are perfect for quickly measuring the depths of multiple objects. Its features include a combination ratchet and speeder that allows for uniform pressure and quicker adjustments. The Micrometer Depth Gage is capable of providing precise measurements. With its steel rule, the Starrett gauge holder ensures accurate measurements every time. So you can be confident that your work is always precise. The Starrett Series Depth Micrometer will be your go-to tool for measuring holes, slots, shoulders, and projections. It is constructed with a ring-type knurled lock nut for quick and sure locking of the micrometer spindle.Manufacturing quality tools that provide consistent and reliable performance since 1880, Starrett's commitment has earned them a reputation as one of the most trusted names in the industry.