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%
23%
69%
13
flagBelgium
0%
18%
18%
63%
11
flagGreece
30%
0%
10%
60%
20
flagTurkey
8%
0%
33%
58%
12
flagPoland
6%
13%
21%
57%
12874
flagSwitzerland
0%
14%
28%
57%
14
flagGermany
5%
17%
19%
55%
203
flagAustria
0%
17%
27%
55%
29
flagAustralia
21%
0%
28%
50%
28
flagthe United Kingdom
10%
13%
27%
49%
118
flagthe Netherlands
27%
9%
18%
45%
11
flagFrance
11%
11%
33%
44%
27
flagIndia
12%
17%
28%
40%
57
flagCanada
21%
4%
34%
39%
23
flagItaly
15%
10%
36%
36%
19
flagthe United States
18%
15%
28%
33%
171
flagMexico
20%
10%
30%
30%
10