Recommended Bubble Sizes

          Recommended Bubble Sizes and Graduations for Different Length Vials
Vial Length Inches
Bubble Size
Graduation Style
Millimeter
Inches
7/8
8
3/10
1-2-3
1-1/8
10
4/10
1-2-3
1-1/4
10
4/10
1-2-3
1-3/8
14
5/10
1-2-3
1-1/2
14
5/10
2-3
1-5/8
14
5/10
2-3
1-3/4
16
6/10
2-3-4-5
1-7/8
16
6/10
2-3-4-5
2
20
7/10
2-3-4-5
2-1/8
20
7/10
2-3-4-5-6-7-8-9
2-1/4
20
7/10
3-4-5-6-7-8-9
2-3/8
20
7/10
6-7-8-9
2-1/2
24
8/10
6-7-8-9
2-5/8
26
8/10
6-7-8-9
2-3/4
28
1-1/10
6-7-8-9-10
2-7/8
28
1-1/10
6-7-8-9-10
3
30
1-2/10
10-11
3-1/8
32
1-2/10
10-11
3-1/4
32
1-2/10
10-11
3-3/8
34
1-3/10
10-11-12
3-1/2
36
1-4/10
12-13
3-5/8
36
1-4/10
12-13
3-3/4
40
1-5/10
12-13
3-7/8
40
1-5/10
12-13
4
40
1-5/10
12-13-14
4-1/8
40
1-5/10
12-13-14
4-1/4
44
1-8/10
13-14-15
4-3/8
44
1-8/10
13-14-15
4-1/2
44
1-8/10
13-14-15
4-5/8
44
1-8/10
13-14-15
4-3/4
50
2
13-14-15
4-7/8
50
2
13-14-15
5
54
2-2/10
14-15-16
5-1/8
54
2-2/10
14-15-16
5-1/4
56
2-2/10
14-15-16
5-3/8
56
2-2/10
14-15-16
5-1/2
56
2-2/10
14-15-16-17
5-5/8
56
2-2/10
14-15-16-17
5-3/4
58
2-3/10
16-17
6
64
2-5/10
16-17-18
6-1/4
66
2-5/10
17-18-19-20
6-1/2
68
2-6/10
17-18-19-20
6-3/4
70
2-6/10
17-18-19-20
7-8-9-10
70
2-7/10
17-18-19-20