What it is?

Barometer
Sextant
Astrolabe
A clock
This is the clock from the time of the Great French Revolution. During this time the French replaced various non-standard units in physics with the decimal metric system. The 24-hour division of the day was also abolished in favour of 20-hour, however, this regulation did not survive.
Katarzyna DÄ…browska
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Answers by country

Barometer
Sextant
Astrolabe
A clock
answers
flagRepublic of Ireland
0%
7%
21%
71%
14
flagBelgium
0%
18%
18%
63%
11
flagSwitzerland
0%
12%
25%
62%
16
flagGreece
30%
0%
10%
60%
20
flagTurkey
8%
0%
33%
58%
12
flagPoland
6%
13%
21%
57%
13006
flagGermany
5%
17%
19%
55%
223
flagAustria
0%
16%
30%
53%
30
flagthe Netherlands
23%
7%
15%
53%
13
flagAustralia
19%
0%
25%
51%
31
flagthe United Kingdom
10%
14%
26%
49%
120
flagFrance
10%
10%
32%
46%
28
flagIndia
14%
15%
28%
39%
63
flagCanada
21%
4%
34%
39%
23
flagItaly
15%
10%
40%
35%
20
flagthe United States
18%
16%
28%
32%
174
flagMexico
20%
10%
30%
30%
10