Check the listing for details. 10-50MM DIAMETER CAPACITY CONCENTRICITY CHECKER (4401-1011). Condition: New. Listed at 2488.87 USD. 10-50mm Diameter Capacity Universal Single Indicator Concentricity Checker ~ Diameter capacity is 0.394-1.969" or 10-50 mm. ~ Length capacity is 6". ~ Accuracy is 0.00012"/ 0.003mm. ~ Dimensions are 360 (length) X 150 (width) X 151mm (height). ~ Concentricity Gauge allows you to measure the runout of parts internal and external. ~ Two position wheels made from solid steel. ~ Precision drive wheel has a perfect ratio to push the parts down. ~ Ultra high precision ball bearings provide friction free movement. ~ Directional drive hand wheel pushes the parts into the stop for accurate repeatable readings with equal pressure. ~ Heavy duty base mounted fine adjustable sliding test indicator holder that will accept test indicators with dovetail slot. ~ Adjustable mechanical arm stop holds the arm up for one handed operation.