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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

16010050
16016050
25016060
30020050
25025050
30030070
40025070
400400100
630400100
630630100
800500130
1000630150
1000750150
10001000150
16001000200
20001000250
16001600300
20001600300
25001600300
30002000500
40002000500
60002000700

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

   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

10063
160100
250160
400250
630400
1000630

2
2
2.5
3.5
4.5
6

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

160160
200200
250250
315315
400400
500500

2
2
2.2
2.6
3
3.5

4
4
4.5
5.2
6
7

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

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

4090
6390
10090
16090
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

4006025
6310035
100016050
160025080
200030100

1.6
2.1
3.0
4.4
5.4

2.6
3.5
5.0
7.4
10.0

2.4
3.2
4.5
6.6
8.1

3.9
5.3
7.5
11.1
13.5

8.0
10.5
15
22
27

13
18
25
37
45

  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

1602516
2504025
4006340
63010063

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 LWHmm) Size of column(mm) Flatness of working surface of base(µm)  Measuring range(mm)

15010040
20015050
30020050

150Ø18
300Ø35
300Ø35

2
2
2

0~100
0~250
0~250

 Cast iron box type block

 
TYPE
mm
   Precision grade
 
grade 00 flatness (µm)
 
grade 0 flatness(µm)
 
grade 1 flatness(µm)
30020050
30030070
40025070
40040070
630400100
630630100
800500130
1000630150
1000750150
10001000150
16001000200
20001000200
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

1006090
15080125
200100180
300125270

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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