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                                      |  Granite Inspection Surface Plate | 
                                     
                                    
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                                       Features : 
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                                            With high hardness, stable function, long working life. 
                                              Less susceptible to corrosion, non-distorted, minimal changes in dimension due to temperature changes. 
                                            No burrs or protrusions can form on its surface. Its flatness remains high even though it has been used for a long time.  It causes no damage to work pieces or instruments. | 
                                           
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                                      |   Specifications : | 
                                     
  
  
  
    |   | 
    Size (mm) | 
    Order No.  | 
    Grade 00 precision (μm) | 
    Grade 0 precision (μm) | 
   
  
    |   | 
    150*100*40 | 
    521-101 | 
    2.5 | 
    5 | 
   
  
    |   | 
    160*160*50 | 
    521-102 | 
    2.5 | 
    5 | 
   
  
    |   | 
    250*160*50 | 
    521-103 | 
    3 | 
    5.5 | 
   
  
    |   | 
    250*250*50 | 
    521-103-1 | 
    3 | 
    5.5 | 
   
  
    |   | 
    300*200*50 | 
    521-104 | 
    3 | 
    5.5 | 
   
  
    |   | 
    300*200*80 | 
    521-104-1 | 
    3 | 
    6 | 
   
  
    |   | 
    300*300*70 | 
    521-104-2 | 
    3 | 
    6 | 
   
  
    |   | 
    350*300*100 | 
    521-105 | 
    3 | 
    6 | 
   
  
    |   | 
    400*250*70 | 
    521-106 | 
    3 | 
    6 | 
   
  
    |   | 
    400*400*100 | 
    521-106-1 | 
    3.5 | 
    6.5 | 
   
  
    |   | 
    630*400*100 | 
    521-107 | 
    3.5 | 
    7 | 
   
  
    |   | 
    630*630*100 | 
    521-107-1 | 
    4 | 
    8 | 
   
  
    |   | 
    800*500*130 | 
    521-108 | 
    4 | 
    8 | 
   
  
    |   | 
    1000*630*150 | 
    521-110 | 
    4.5 | 
    9 | 
   
  
    |   | 
    1000*750*150 | 
    521-110-1 | 
    5 | 
    9 | 
   
  
    |   | 
    1000*1000*150 | 
    521-110-2 | 
    5 | 
    10 | 
   
  
    |   | 
    1600*1000*200 | 
    521-116 | 
    6 | 
    12 | 
   
  
    |   | 
    2000*1000*250 | 
    521-120 | 
    6.5 | 
    13 | 
   
  
    |   | 
    1600*1600*300 | 
    521-116-1 | 
    6.5 | 
    14 | 
   
  
    |   | 
    2000*1600*300 | 
    521-120-1 | 
    7 | 
    15 | 
   
  
    |   | 
    2500*1600*300 | 
    521-125 | 
    8 | 
    16 | 
   
  
    |   | 
    3000*2000*500 | 
    521-130 | 
    9 | 
    18 | 
   
  
    |   | 
    4000*2000*500 | 
    521-140 | 
    11 | 
    22 | 
   
  
    |   | 
     6000*2000*700 | 
    521-160 | 
    15 | 
    30 | 
   
 
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