Henry Ford perfected the assembly line in the manufacture of automobiles, a concept which changed a nation as efficient mass production made ownership of things possible for the average person. Along with the assembly line, then came the advancement of materialism as more and more things became affordable to the average consumer.
It is, therefore, a fitting way for Aldous Huxley to convey the consumership and materialism that dominate the society of the New World by having time measured in terms of Ford. In addition, with time measured by the name of a man associated with the efficient assembly line, the importance of this type of production is underscored as people are made in mass with the Bokanovsky Process which standardizes humans and generates them in massive multiples by machines: "Ninety-six identical twins working ninety-six identical machines!" the enthusiastic voice of the tour guide describes the production of human beings in Chapter 1 of Brave New World, in a satiric mimicking of tours that people actually would take in Huxley's day through manufacturing buildings.