A depth micrometer is a precision metrology instrument used to measure the depth of: Blind holes Slots Recesses Counterbores Steps in machined parts From the photo: Brand: Mitutoyo (top-tier Japanese metrology manufacturer) Type: Mechanical (thimble scale, not digital) Range marking visible: 0–100 mm Includes interchangeable extension rods (the two long bars on the right) The wide base sits flat on the surface while the rod measures down into the feature This is a workshop-grade inspection tool commonly used in toolrooms, machining, and quality control.
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