[mobile bridge] The EFA or Engin de Franchissement de l`Avant (forward crossing apparatus) is a field-deployable river crossing apparatus, used by combat engineers in the French Army. It may either be used as a bridge (deployed in a series), or as a ferry. The crew consists of four people: The EFA is the heir of the first self-propelled bri... Found on http://en.wikipedia.org/wiki/EFA_(mobile_bridge)
(from the article `measurement system`) ...was the same size as the dry homer, and the liquid bat corresponded to the dry `efa. Found on http://www.britannica.com/eb/a-z/e/12