The “Glas” is an intriguing, though lesser-known, unit of volume, traditionally used in the Netherlands to measure wine and spirits. Dating back to the 1800s, one Glas was approximately equivalent to 150 milliliters, aligning closely with a standard modern wine glass. Its historical use highlights how cultures have tailored measurement systems to fit specific social practices, such as enjoying wine in communal settings, thus embodying the close relationship between cultural traditions and measurement systems.
While it has mostly fallen out of use today, the Glas provides a fascinating glimpse into historical consumption habits and the evolution of standard units. It reminds us that units of measurement are not merely mathematical constructs but are also deeply influenced by the lifestyles and practices of their time.
The decilitre, a metric unit of volume, equates to one-tenth of a litre, or precisely 100 millilitres. While the metric system is well-known for its ease of use, the decilitre often flies under the radar, overshadowed by its bigger sibling, the litre. It’s particularly prevalent in certain European countries for measuring beverages, like boxed wine or packaged juices, offering a convenient middle ground between the millilitre and litre.
Interestingly, the term “decilitre” also connects to the origin of the metric system, which was established during the French Revolution. The French aimed to simplify and standardize measurements, allowing easy conversion and understanding across different regions—a legacy that continues to shape global measurement systems today. Embracing the decilitre invites a peek into this rich history of measurement.
| Glas | Decilitres |
|---|---|
0
glas
|
0
dl
|
0.5
glas
|
1
dl
|
1
glas
|
2
dl
|
1.5
glas
|
3
dl
|
2
glas
|
4
dl
|
2.5
glas
|
5
dl
|
3
glas
|
6
dl
|
3.5
glas
|
7
dl
|
4
glas
|
8
dl
|
4.5
glas
|
9
dl
|
5
glas
|
10
dl
|
5.5
glas
|
11
dl
|
6
glas
|
12
dl
|
6.5
glas
|
13
dl
|
7
glas
|
14
dl
|
7.5
glas
|
15
dl
|
8
glas
|
16
dl
|
8.5
glas
|
17
dl
|
9
glas
|
18
dl
|
9.5
glas
|
19
dl
|
10
glas
|
20
dl
|
10.5
glas
|
21
dl
|
11
glas
|
22
dl
|
11.5
glas
|
23
dl
|
12
glas
|
24
dl
|
12.5
glas
|
25
dl
|
13
glas
|
26
dl
|
13.5
glas
|
27
dl
|
14
glas
|
28
dl
|
14.5
glas
|
29
dl
|
15
glas
|
30
dl
|
15.5
glas
|
31
dl
|
16
glas
|
32
dl
|
16.5
glas
|
33
dl
|
17
glas
|
34
dl
|
17.5
glas
|
35
dl
|
18
glas
|
36
dl
|
18.5
glas
|
37
dl
|
19
glas
|
38
dl
|
19.5
glas
|
39
dl
|
20
glas
|
40
dl
|
20.5
glas
|
41
dl
|
21
glas
|
42
dl
|
21.5
glas
|
43
dl
|
22
glas
|
44
dl
|
22.5
glas
|
45
dl
|
23
glas
|
46
dl
|
23.5
glas
|
47
dl
|
24
glas
|
48
dl
|
24.5
glas
|
49
dl
|
25
glas
|
50
dl
|
25.5
glas
|
51
dl
|
26
glas
|
52
dl
|
26.5
glas
|
53
dl
|
27
glas
|
54
dl
|
27.5
glas
|
55
dl
|
28
glas
|
56
dl
|
28.5
glas
|
57
dl
|
29
glas
|
58
dl
|
29.5
glas
|
59
dl
|
30
glas
|
60
dl
|
30.5
glas
|
61
dl
|
31
glas
|
62
dl
|
31.5
glas
|
63
dl
|
32
glas
|
64
dl
|
32.5
glas
|
65
dl
|
33
glas
|
66
dl
|
33.5
glas
|
67
dl
|
34
glas
|
68
dl
|
34.5
glas
|
69
dl
|
35
glas
|
70
dl
|
35.5
glas
|
71
dl
|
36
glas
|
72
dl
|
36.5
glas
|
73
dl
|
37
glas
|
74
dl
|
37.5
glas
|
75
dl
|
38
glas
|
76
dl
|
38.5
glas
|
77
dl
|
39
glas
|
78
dl
|
39.5
glas
|
79
dl
|
40
glas
|
80
dl
|
40.5
glas
|
81
dl
|
41
glas
|
82
dl
|
41.5
glas
|
83
dl
|
42
glas
|
84
dl
|
42.5
glas
|
85
dl
|
43
glas
|
86
dl
|
43.5
glas
|
87
dl
|
44
glas
|
88
dl
|
44.5
glas
|
89
dl
|
45
glas
|
90
dl
|
45.5
glas
|
91
dl
|
46
glas
|
92
dl
|
46.5
glas
|
93
dl
|
47
glas
|
94
dl
|
47.5
glas
|
95
dl
|
48
glas
|
96
dl
|
48.5
glas
|
97
dl
|
49
glas
|
98
dl
|
49.5
glas
|
99
dl
|
50
glas
|
100
dl
|
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