Product Description 2230SB-01 Mitutoyo Series 2 Dial Indicator ANSI/AGD Type: 0-2.5mm The Mitutoyo2230SB-01Series 2 Dial Indicator has the following specifications: Range: 0-2.5mm Graduations: 0.01mm Range/Rev: 1mm Dial Reading: 0-100 Type: With Flat Back Accuracy First 2.5 Rev: +/- 0.01mm Overall Accuracy: +/- 0.01mm Measuring Force: 1.4N or less Stem/Shank: 3/8³ Contact Point: #4-48 UNF Type: ANSI/AGD Jeweled Bearing Type: N With Damper at Lowest Rest Point Type: N Features: Standard 0.01mm graduation dial gauges having an outer frame with an outside diameter of 57mm. All types come with limit pins and an outer frame clamp as standard. The outer clamp and lifting lever (optional) can be attached to either the right or left side. These parts can be easily installed and removed without tools. Secured adhesion between the outer frame and crystal as well as the use of an O-ring ensure countermeasures against water and oil permeation via the front face. The stem spindle is made of high-strength quench-hardened stainless steel which resists strenuous use. A carbide contact point is used. The grand gear uses stainless steel that is resistant to wear and deformation. Application of a hard coating on the surface of the crystal makes the gauge highly scratch- and chemical-resistant