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The first public figures for the new standard, together
with the name meter, were provided by the académiciens
in a report by Borda, Lagrange and Monge in spring 1793.
A project of decree for a general system of weights and measures,
also containing the cited report, was presented to the National
Assembly in July of the same year.
The length of the meter was obtained from the Lacaille-Cassini
measurements, with the simple calculation shown
in the previous subsection.
The 1793 provisional meter
Its approximated value is 3 pieds 11 lignes 44/100
present Paris measure [443.44 lignes]
and this approximation is such that its error does not exceed
one tenth of
, that is sufficient
for the ordinary use in the society. This unit will
take the name meter.
(, p. 5)
The so called provisional meter,
with all the resulting units of volume,
weights and surfaces [14,32],
was adopted by decree the 1st August 1793.