Product Description 152-401 Mitutoyo Micrometer Head for XY Stage: 0-25mm (Y-Axis) The Mitutoyo152-401Micrometer Head for XY Stage has the following specifications: Range: 0-25mm Graduations: .001mm (with Vernier) Accuracy: +/- .002mm Stem Diameter: 18mm Stem: Plain Spindle Face: Spherical with Carbide Tip Notes: For Y-Axis, With Vernier Features: Adjustable spindle can be moved with the thimble held at any position, allowing easy zero-setting. Technical Data: Spindle Pitch: 1mm Spindle face: Flat (hardened) or spherical with carbide tip (more than HRA90), lapped surface Scale surface: White anodized aluminum.