GAGE BLOCK CLASSIFICATION

 

Grade 0.5

Grade 1

Grade 2

Grade 3

Nominal Size(in)

Length

Flatness & Parallelism

Length

Flatness & Parallelism

Length

Flatness & Parallelism

Length

Flatness & Parallelism

1

1

1

2

2

+4-2

4

+8-4

5

2

2

1

4

2

+8-4

4

+16-8

5

3

3

1

5

3

+10-5

4

+20-10

5

4

4

1

6

3

+12-6

4

+24-12

5

5

   

7

3

+14-7

4

+28-14

5

6

   

8

3

+16-8

4

+32-16

5

7

   

9

3

+18-9

4

+36-18

5

8

   

10

3

+20-10

4

+40-20

5

10

   

12

4

+24-12

5

+48-24

6

12

   

14

4

+28-14

5

+56-28

6

16

   

18

4

+36-18

5

+72-36

6

20

   

20

4

+40-20

5

+80-40

6

 

Gage Block Set No. 4-81 (Inch system)

.050

.102

.114

.126

.138

.150

.750

.100

.103

.115

.127

.139

.200

.800

.1001

.104

.116

.128

.140

.250

.850

.1002

.105

.117

.129

.141

.300

.900

.1003

.106

.118

.130

.142

.350

.950

.1004

.107

.119

.131

.143

.400

1.000

.1005

.108

.120

.132

.144

.450

2.000

.1006

.109

.121

.133

.145

.500

3.000

.1007

.110

.122

.134

.146

.550

4.000

.1008

.111

.123

.135

.147

.600

 

.1009

.112

.124

.136

.148

.650

 

.101

.113

.125

.137

.149

.700

 

Seven extra blocks used to make up an 88 Block set

.0625=

.078125=

.093750=

.109375=

.100025

.100050

.100075

Angle Block Sets

Set No. 6 6 Blocks, 1 deg. smallest increment

6 Blocks

1

3

5

15

30

45

Set No. 11 11 Blocks, 1 min. smallest increment

6 Blocks

1

3

5

15

30

45

5 Blocks

1’

3’

5’

20’

30’

 
Set No. 16 16 Blocks, 1 sec. smallest increment

6 Blocks

1

3

5

15

30

45

5 Blocks

1’

3’

5’

20’

30’

 

5 Blocks

1"

3"

5"

20"

30"

 

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