Inch

Metric

1"

2"

3"

4"

5"

6"

8"

9"

10"

12"

Aluminum

Brass

Oilboard

Plastic

Stainless Steel

Steel

Blank

Letter

Letter and Number

Number

Punctuation

Character

Message

Symbol

Technical

Electrical/Electronic

Flow

Flowchart

Heating and Air Conditioning

House and Plumbing

Pipe Fittings

Sheet Metal Conduit

2"

2 1/4"

3"

3 1/8"

4"

4 1/8"

5"

5 1/4"

6"

7"

7 1/4"

8"

9"

10"

10 7/8"

12"

14"

18"

19 1/2"

39"

46"

51"

6"

8"

10"

11 1/8"

12"

20"

24"

30"

36"

48"

60"

72"

96"

120"

300 mm

500 mm

1,000 mm

Exempt

1C995

EAR99

Compliant

Not Compliant

Compliant

Not Compliant

1 1/4"

1 1/2"

2"

2 1/4"

2 3/4"

3"

3 1/4"

3 3/8"

3 3/4"

4"

4 3/8"

4 1/2"

4 5/8"

4 3/4"

5"

5 1/16"

5 1/4"

5 1/2"

5 7/8"

7"

7 5/8"

8"

8 3/4"

8 13/16"

9"

10"

19 1/2"

20"

36"

45 1/2"

46"

70"

75"

Accessible

Arrow

Circle

Diamond

Ellipse (20°, 30°, 40°, and 50° Projections)

Hexagon

Isometric Ellipse (25°, 35°, 45°, and 60° Projections)

No Parking

No Smoking

Square

Triangle

1"

2"

2 1/2"

3"

4"

6"

12"

1"

1 15/32"

1 1/2"

1 9/16"

1 31/32"

2"

2 1/16"

2 15/32"

2 9/16"

3"

3 1/64"

3 1/16"

3 1/8"

3 5/32"

3 1/4"

3 17/64"

4"

10"

12 cm

25 cm

5"

7"

7 1/4"

8"

9"

9 3/8"

9 3/4"

9 7/8"

10"

10 1/8"

10 1/2"

11"

11 1/2"

12"

10"

12"

1 mm

Bevel

Square

13

33

39

41

42

44

46

56

60

61

81