What was used as a unit of mass in the classical times?

carob seed
a drop of lead
handful of sand
swallow's egg
Carat, a unit of mass equal to 200 mg, is derived from a carob seed (Greek kerátion). People commonly believed that the seeds have unusually low variability in mass. Modern research denied this claim.
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Answers by country

carob seed
a drop of lead
handful of sand
swallow's egg
answers
flagGreece
55%
27%
11%
5%
18
flagAustralia
54%
9%
22%
13%
22
flagRussia
42%
13%
34%
10%
38
flagthe United Kingdom
41%
12%
37%
7%
56
flagBelarus
41%
25%
25%
8%
12
flagAustria
40%
0%
30%
30%
10
flagUkraine
39%
10%
32%
17%
68
flagthe United States
38%
14%
33%
13%
113
flagCanada
35%
28%
28%
7%
14
flagGermany
33%
12%
41%
12%
24
flagIndia
28%
20%
44%
8%
25
flagUnknown
28%
28%
35%
7%
14
flagPoland
27%
13%
41%
17%
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