Usually the simple linear configuration is used but there exists tens of possibilities
Interchangeable carbide contact point swivels over 240 degrees
A minimum value holding function provides easy measurement of hole diameter
Schwenk SL Precision Bore Gauge FOR MEASURING BORES WITH BORING BAR LEFT IN THE WORKPIECE Code 15300000 application range [mm] 100 - 280
Mitutoyo 178-745-13 SJ-220S Portable Surface Roughness Tester, Transverse Drive, Stylus Tip Angle 60°, Radius 2μm, Imperial / Metric, Range X-Axis: .22"/5.6mm Pointed Usually the simple linear configuration178 745 13 Mitutoyo SJ 210 Portable Surface Roughness Tester: . 22 5. 6mm The Mitutoyo 178 745 13 SJ 210 Portable Surface Roughness Testers have the following specifications: Range X Axis: . 22 5. 6mm Measuring Force: 4mN Stylus Tip (Diamond, angle tip radius): 90 5m External I O: USB I F, Digimatic output, Printer output, RS 232C I F, Footswitch I F Measuring Speed: . 01, . 02, . 03 in s . 25, . 50, . 75 mm s Returning Speed: . 039 in s 1 mm s