Description
The Mitutoyo 209-311 Internal Dial Caliper Gage has the following specifications:
Range: 90-140mm
Graduation: 0.01mm
Accuracy: +/- 0.03mm
Max. Measuring Depth L: 85mm
Max Groove Depth A: 8.3mm
Min. Groove Width B: 1.2mm
Measuring Contact Type: C
Size: 1mm
Weight: 230g
The Mitutoyo internal dial indicators utilize spring-loaded jaws to make constant point contact pressure to take highly accurate comparison measurements of hole diameters and groove and tube thicknesses. The dial display provides precise, readable measurements in metric or inches.
209-311 Features:
Versatile ID measuring gages for holes diameters, groove thickness, tube thickness, and hard-to-reach dimensions.
Available in Metric and Inch models
Dial models available in ranges up to 7.2″/120mm
Available with different types of jaws for various application needs
Indicator should be used in conjunction with a setting ring or micrometer
White dial face for easier, precise measurement readings
Crystal is glare-free with a scratch-resistant coating
IP65 Rating resists dusts and liquid penetration up to the force of a low-pressure water jet
Supplied in a fitted plastic case
Excellent resistance against water and dust (IP65 protection level)
Optimized measuring force
Ergonomically designed to lie securely in your hand when measuring


