L-21LRoundtestTo realize efcient centering and leveling combined with high-precision measurement Mitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.A cost-effective compact instrument that enables full-scale roundness evaluation.•Offers easy operation for anyone.A large, simple key arrangement is used. •User-friendly operation.Measurement results and recorded proles are easy to view with the large LCD, and can then be printed by the built-in thermal line printer. Furthermore, optional functions to improve usability can be offered.Easy operation, compact and outstanding cost/performance ratio, designed for use on the shop-oor right beside the production line.•D.A.T. (Digimatic Adjustment Table) function aids adjustments such as centering and leveling, and substantially reduces the time required for preliminary setup operations.Roundtest RA-10SERIES 211 — Roundness Measuring InstrumentWhat is the D.A.T. (Digimatic Adjustment Table) function? •Compact, lightweight design from incorporating electronic components inside the main unit.Dedicated analysis unit type (RA-120)•ROUNDPAK, a data analysis program employs Windows OS and archived higher level of analysis.Data analysis by PC (RA-120P)Feed the digital micrometerhead of the trntable bythe deviation displayed.PreliminarymeasurementDisplay of misalignmentsSimple adjustmentCentering/leveling completeCentering range: ±3 mmLeveling range: ±1° Preliminary measurement oftwo cross-sections ’A’ and ‘B’.Initial misalignmentof centers atturntable surface Initial misalignment of axes Turntable axisTurntable axisWorkpieceWorkpieceRoundtest RA-120/120PSERIES 211 — Roundness Measuring InstrumentsRefer to the Roundtest RA-120/120P Brochure (No. E15008) for more details.Refer to the Roundtest RA-10 Brochure (No. E15019) for more details.SPECIFICATIONSModel No.RA-10TurntableRotational accuracy(JIS B 7451-1997)Radial direction(0.04+6H/10000) µm H: Probing height (mm)Axial direction(0.04+6X/10000) µm X: distance from the center of rotation (mm)Maximum probing diameterø100 mmMaximum loading mass10 kgVertical movementVertical travel117 mmX axisTravel range 75 mm (–25 mm to 50 mm from the rotation center)Detector*Measuring range±1000 µm* Only the standard length stylus is applicable to this detector. The long type cannot be used.SPECIFICATIONSModel No.RA-120RA-120PTurntableRotational accuracy(JIS B 7451-1997)Radial direction(0.04+6H/10000) µm H: Probing height (mm)Axial direction(0.04+6X/10000) µm X: distance from the center of rotation (mm)Maximum probing diameter*1ø280 mm (ø380 mm: for the vertical position when detector holder is installed reversely, the maximum probing height is up to 50 mm from the table top.)Maximum loading mass25 kgVertical movementVertical travel280 mmX axisTravel range 165 mm (–25 mm to 140 mm from the rotation center)Detector*2Measuring range±1000 µm*1 Auxiliary stage for a low-height workpiece (optional) is required for the measurement 20 mm or less in the radial direction from the center point of the table and 20 mm or less from the table top.*2 Only the standard length stylus is applicable to this detector. The long type cannot be used.An inspection certicate is supplied as standard. Refer to page U-11 for details.RA-10Mount the workpiece on the holding xture.Position the detector in contact with the workpiece.Press the "Condition" button as required.Press the "START/STOP" button.Simple measurement procedureRA-120RA-120PThe analysis capabilities for the various models (RA-120/120P/10) vary. For details, refer to page L-26.Products equipped with the measurement data output function can be connected to the measurement data network system MeasurLink (refer to page A-5 for details).