Product Name: High Precision Projection Length Measuring Machine (JD21) Model NO.: JD21 Customized: Non-Customized Certification: GB, CE, ISO Precision Measuring Device: Precision Measuring Device Accuracy: (0.6+L/200) micrometer Measure Method: Manual Precision: 0.1 micrometer Range: 0~2000mm Measurement Object: Length Material: Iron Type: Dial Indicator Measuring Force: 2N Division value: 0.001mm Max load: 10kg Trademark: Sinpo Transport Package: Veneer Case Specification: ISO9001: 2000 CE Certificate Origin: Guizhou, China HS Code: 9031499090 Product Description JD21Projection Length Measuring MachinePURPOSEThe Projection length measuring machine is a high precision optical instrument for measuring length. It can be used to determine the size of workpiece by means of direct and differential measurements. The chief uses of the machine are as follows:. Differential measurements of the gauge block of 4th and 5th grade over 100 mm;. Direct measurements of the calibration rods of the micrometer calipers, inside calipers micrometer and self-made measuring rods; Internal measurements of calipers gauge and bore diameter; Measurement of external thread pitch diameter. It can be used in inspection department of various factories and mines, scientific research institutes and the state metrological organizations.The base of the instrumenTs, which is made of high quality cast iron, has enough strength and stabilityUsing measuring theory, real-time correct Abbe error.Adopting a novel wax screen with magnifier as the projection reading screen, imaging clearlyThe instrument has complete measuring accessories, it is easy to operate and its application is extensiveSPECIFICATIonMain accessories:1. V-type support2. Block support3. Gauge support4. Large measuring arms5. Small measuring arms6. Circle of measuring standard7. Center cradle8. Three-wire supports' group9. Φ 14 flat contact tip10. Φ 2 small flat contact tip11. Φ 8 middle flat contact tip12. Spherical-end contact tip of RS2013.1.5*8 knife-edge contact tip14. Pads group15. V-type iron16. Sticking temperature gauge* Measuring rangeType JD9A JD21 JD10AExternal measurement without center cradle (mm) 0-1000 0-2000 0-3000Internal measurement With measuring hooks (depth 5-50 mm) 13.5-900 13.5-1900 13.5-2900External thread pitch diameter measurement upTo M140 To M140 To M140* Instrument accuracy:Minimum scale: 1 um* Direct measurement of external dimension:. 0-0.1mm Micron scale indication error 0.25 μ M. 0.1-100mm Millimeter scale indication error (0.6+ L/200)μ M. 100-1000mm Decimeter scale indication error (0.5+L/100) μ M. Remark: L-Length measured in mm* Fluctuation of instrument indication:. External measurement 0.1μ M. Internal measurement 0.5μ M* Measuring pressure:. External measurement 200± 20g. Internal measurement 150-200g* Universal table:. Transverse travel 0-40 mm. Vertical travel 0-70 mm. Longitudinal motion in level position: 10mm. Rotary motion: >± 3° Tilting motion: >± 3. Transverse micrometers scale unit 0.01 mm. Allowable load of the work table 10 Kg* Maximum holding diameter of center cradle:. Length 0-170mm: Φ 140mm. Length 170-210: Φ 130mm* V-type support:. Height adjusting range: >28m. Maximum diameter of supporting workpiece to: 30mm* Block gauge support, supporting length to: 1000mm* Ball gauge support, supporting length to: 1000mm* Wringing length of block cradle to: 100mm* Range of V-type to: Φ 45* Dimension:. JD9A 1980x450X750mm. JD21 2980x450X800mm. JD10A 4000x450X850mmModelJD21measurement range (mm)External size (mm)0~2000Internal size (mm)13.5~1900Depth of small and large measuring hooks5~50Measurement of external thread mid-diameter0~140Minimum division value0.001mmAccuracy of outer size's measurementReadout errors of division value in micrometerwithin±60μm≤±0.20μmbeyond±60μm≤±0.25μmReadout errors of division value in millimeter±(0.6_L/200)μmReadout errors of division value in decimeter±(0.5+L/100)μmReadout transaction data of the gauging spindleMeasurement of external size≤0.1μmMeasurement of internal size≤0.5μmMeasurement forceMeasurement of external size2N±0.4NMeasurement of internal size1.5N~2NUniversal worktableDivision value of horizontal micro-drum0.01mmHorizontal stroke0~70mmVertical stroke0~40mmVertical floating stroke of horizontal position10mmLoad capacity10kgMaximum diameter gripped by the tailstockWhen the length between 0~170φ140mmWhen the length between 170~210φ130mmV-type supportAdjustable range of height>28mmDiameter range of the supporting memberup to φ30mmSupport frame for the measuring blockIts length up to 1000mmWorking range of V-type ironMaximum to φ45mmAmbient environment requirementRoom temperature20 centigrade±1 centigradeHumidity≤60%Overall size (mm)2980×450×800