Attributes . Diameter of Measuring Disk: 0.787"/20mm, 0.028"/0.7mm (1mm: Modelsover100mm) Edge Thickness to Enter Narrow Recesses, with Ratchet Stop for Constant Force, with Standard Bar Except for 0 - 1"/0 - 25mm Model, with Output (Series 323), the Series 223 is Provided with A Mechanical Digit Counter for Quick Reading of Measurements, Supplier in Fitted Plastic Case (Over 100mm Models Supplied Wooden Cases) . Names