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mille

1

In Belgium and Cameroon, 20ᵗʰ century, a unit of length, = 1 international nautical mile.

United Nations, 1966.

2

In France, 1.949 km.

International Critical Tables, 1926.

3

In Europe, 19ᵗʰ century, a unit of count for roofing slates, = 1200 slates.

sources

In England and on the Continent roofing slates are sold by the “mille,” called a thousand, which consists of 1200 pieces, and in all export shipments 5% is added for breakage, so practically in the United States the foreign “thousand” means 1260 slates, irrespective of size.

H. L. J. Warren.
Slate.
in
Richard P. Rothwell, ed.
The Mineral Industry, vol. 6.
New York: The Scientific Publishing Co., 1898.
Pages 609-610.