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Granite Measuring Tools & Components are made of special granite rock. They are more and more extensively used in scientific researching activities, because of its high precision, high stability, high hardness and corrosion resistance. We can provide a great variety of granite components according to customer's requirements such as granite bases, columns, beams and guide ways. We can also drill holes, process slots and bond metal inserts to tables to make the perfect combination between granite and metal.
 
  
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       Granite Inspection Surface Plate

Dimension

mm

 weight

Kg

 grade 000

precision µm

 grade 00

precision µm

 grade 0

precision µm

 grade 1

precision µm

160¡Á100¡Á50
160¡Á160¡Á50
250¡Á160¡Á60
300¡Á200¡Á50
250¡Á250¡Á50
300¡Á300¡Á70
400¡Á250¡Á70
400¡Á400¡Á100
630¡Á400¡Á100
630¡Á630¡Á100
800¡Á500¡Á130
1000¡Á630¡Á150
1000¡Á750¡Á150
1000¡Á1000¡Á150
1600¡Á1000¡Á200
2000¡Á1000¡Á250
1600¡Á1600¡Á300
2000¡Á1600¡Á300
2500¡Á1600¡Á300
3000¡Á2000¡Á500
4000¡Á2000¡Á500
6000¡Á2000¡Á700

2.4
4
6
9
9.4
19
21
48
76
155
156
284
338
450
963
1505
2312
2890
3612
9030
12040
25284

1.5
1.5
1.5
1.5
1.5
1.5
1.5
2
2
2
2
2.5
2.5
2.5
3
3.5
3.5
3.5
4
4.5
5.5
7.5

2.5
2.5
3
3
3
3
3
3.5
3.5
4
4
4.5
5
5
6
6.5
6.5
7
8
9
11
15

5
5
5.5
5.5
5.5
6
6
6.5
7
8
8
9
9
10
12
13
13
14
16
18
22
30

10
10
11
11
11
12
12
13
14
16
16
18
18
20
24
26
26
28
32
36
44
60

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   Granite Squares

 
TYPE
£¨mm£©		  Square ness between measuring surface and datum surface  Flatness&straightness of measuring surface  Flatness &straightness of datum surface
 Precision grade(µm)
00 0 00 0 00 0

100¡Á63
160¡Á100
250¡Á160
400¡Á250
630¡Á400
1000¡Á630

2
2
2.5
3.5
4.5
6
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4
4
5
7
9
12

 1
1
1
1
1.5
2.5

1
2
2
2.5
3
5

1
1
1
1
1
1.5

1
1
2
2
2.5
3

¡¡   Granite Square Rulers

 
TYPE
£¨mm£©		  
Square ness between adjacent measuring 		 
Straightness of measuring surface		  
Parallelism between opposite
measuring surface
  Precision grade(µm)
00 0 00 0 00 0

160¡Á160
200¡Á200
250¡Á250
315¡Á315
400¡Á400
500¡Á500
¡¡

2
2
2.2
2.6
3
3.5
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4
4
4.5
5.2
6
7
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0.8
0.9
1
1.1
1.3
1.5

1.7
1.8
2
2.3
2.6
3

2
2
2.2
2.6
3
3.5
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4
4
4.5
5.5
6
7

   Granite Vee Blocks

TYPE
£¨mm£©

 Flatness of working surface

Parallelism between V slot and bottom surface Parallelism between V slot and bottom surface

¡¡		 Symmetry between V slot & end surface
¡¡		  Square ness between V slot &end  surface

Square ness between V slot & bottom surface

 Height difference of the V slot within a matched pair

  Precision grade (µm)

0

1

0

1

0

1

0

1

0

1

0

1

0

1
40¡Á90¡ã
63¡Á90¡ã
100¡Á90¡ã
160¡Á90¡ã		 1
2
2
2.5
¡¡		 2
3
4
5

¡¡		 3
4
4
5
¡¡		 6
8
8
10
¡¡		 3
4
4
5
¡¡		 6
8
8
10
¡¡		 5
8
8
10
10
16
16
20
5
8
8
10
5
8
8
10
3
4
4
5
6
8
8
10
4
5
5
6
6
10
10
12

  Granite Straightedges


TYPE
£¨mm£©		 Straightness&flatness of working surface Parallelism between working surface
¡¡		  Square ness between working surface and surface
   Precision grade(µm)
00 0 00 0 00 0

400¡Á60¡Á25
63¡Á100¡Á35
1000¡Á160¡Á50
1600¡Á250¡Á80
2000¡Á30¡Á100

1.6
2.1
3.0
4.4
5.4
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2.6
3.5
5.0
7.4
10.0
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2.4
3.2
4.5
6.6
8.1
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3.9
5.3
7.5
11.1
13.5
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 8.0
10.5
15
22
27

13
18
25
37
45
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  Granite Parallels


TYPE
£¨mm£©		 Flatness of working surface&
parallelism of
opposite surface		 Square ness between working surface Tolerance of h.w
between a matched pair
¡¡
  Precision grade (µm)
00 0 00 0 00 0

160¡Á25¡Á16
250¡Á40¡Á25
400¡Á63¡Á40
630¡Á100¡Á63

1.5
2
4
6

3
4
8
12

20
30
40
50

40
60
80
100

1.5
2
4
6

3
4
8
12

   Granite Measuring Instrument

TYPE L¡ÁW¡ÁH£¨mm) Size of column(mm) Flatness of working surface of base(µm)  Measuring range(mm)
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150¡Á100¡Á40
200¡Á150¡Á50
300¡Á200¡Á50
¡¡

150¡ÁØ18
300¡ÁØ35
300¡ÁØ35

2
2
2
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0~100
0~250
0~250
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 Cast iron box type block

 
TYPE
£¨mm£©		    Precision grade
 
grade 00 flatness (µm)		  
grade 0 flatness(µm)		  
grade 1 flatness(µm)
300¡Á200¡Á50
300¡Á300¡Á70
400¡Á250¡Á70
400¡Á400¡Á70
630¡Á400¡Á100
630¡Á630¡Á100
800¡Á500¡Á130
1000¡Á630¡Á150
1000¡Á750¡Á150
1000¡Á1000¡Á150
1600¡Á1000¡Á200
2000¡Á1000¡Á200		 3
3
3
3.5
3.5
4
4
4.5
4.5
5
6
6.5		 5.5
5.5
6
6.5
7
8
8
9
9
10
12
13		 11
11
12
13
14
16
16
18
18
20
24
26

¡¡Cast iron parts


 
TYPE
£¨mm£©

¡¡

 Flatness of
working
surface		 Parallelism
between V slot and bottom surface		 Parallelism
between V slot and side surface		  Symmetry between V slot & end surface Square ness between V slot & end surface  Square ness between V slot & bottom surface  Height difference of the V slot within a matched pair

  Precision grade (µm)
1 2 1 2 1 2 1 2 1 2 1 2 1 2

100¡Á60¡Á90
150¡Á80¡Á125
200¡Á100¡Á180
300¡Á125¡Á270

 5
7
8
10		 10
13
14
15		 10
15
15
20		 20
25
25
30		 10
15
15
20		 20
25
25
30		 20
30
30
40		 40
50
50
60		 20
30
30
40		 40
50
50
60		 15
20
20
25		 20
25
25
30		 12
20
20
25		 25
30
30
35

 
TYPE
£¨mm£©		 Flatness of working surface

Working surface square ness & parallelism of opposite surface
  Precision grade (µm)
1 2 3 1 2 3
100 3.5 7 15 7 15 30
160 4 9 17 8 18 35
200 4.5 10 20 9 20 40
250 5 11 22 10 22 45
315 5.5 12 25 11 25 50
400 6.5 15 30 13 30 60
500 --- 17 35 --- 35 70

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