from The Century Dictionary.
- noun Nautical, the deckbeam under the forward side of the main-hatch, on which the official tonnage and number of the vessel are by the United States statute required to be marked. On river-steamers it is considered to be the beam under the after side of the starboard forward hatch.
Sorry, no etymologies found.
You have all the normal measurements to consider -- main-beam length, inside spread, mass and length of various points.
Audi says the light units have designs that look like open pine cones, and that the shape of the internal reflectors of the main-beam headlights was inspired by the architecture of the Sydney Opera House.
Held to the spot by this display of headgear you contemplate it in all its branches, -- main-beam, brow-tine, bes-tine, royal and surroyal, -- they are all beautifully named.
You very well should be proud to be a Jew, for Jews are the main-beam of Western Culture and intellect.
The Light for Life does have a rather tight beam, though; they say the main beam covers a spot about 22 inches in diameter at a range of 20 feet, which adds up to a main-beam width of only about 5.3 degrees.
TPWD research has shown almost all Texas whitetail bucks grow antlers with a main-beam inside spread of 13 inches or more by the time they are 3 1/2 and older.