[RedDevil]

So, what countries do not yet use the metric system today?
Name ten.
Remember there are over 200 countries.

Oh wow look here (wiki on metrication)...
Also the bottom part of the Wiki link to the metric system has a map showing when countries adopted the metric system. White is unknown, mainly Africa.
In words:

According to the US Central Intelligence Agency's Factbook (2007), the International System of Units has been adopted as the official system of weights and measures by all nations in the world except for Burma, Liberia and the United States,[72] while the NIST has identified the United States as the only industrialised country where the metric system is not the predominant system of units.[73] However, reports published since 2007 hold this is no longer true of Liberia or Burma.[74] An Agence France-Presse report from 2010 stated that Sierra Leone had passed a law to replace the imperial system with the metric system thereby aligning its system of measurement with that used by its Mano River Union (MRU) neighbours Guinea and Liberia.[Note 6][75] Reports from Burma suggest that that country is also planning to adopt the metric system.

While it is true that the metric system was in part imposed during the French revolution, that revolution itself went through several stages.
The early liberal phase saw the introduction of the metric system; those responible for that like https://en.wikipedia.org/wiki/Marquis_de_Condorcet were killed in the later stages of the revolution.