tribrach

Before 798 the new tribrach type appeared, with a design consisting of three radial lines meeting at the centre.

The tribrach is attached to the tripod and placed over the monument.

Adjust the level of the tribrach by slackening the tripod screws and sliding the legs.

Martial used more variations, such as an anapaest in the fourth foot and a tribrach in the third.

A tribrach is a metrical foot used in formal poetry and Greek and Latin verse.

Once the tribrach is nearly centered over the monument, level the tribrach the last little bit using the thumbscrews.

Slacken the tribrach from the tripod head and slide it the last 4-5mm so that it is centred over the monument and level.

The tribrach design was introduced initially at London alone but soon spread to Canterbury after it was reconquered from the rebels.

Some variations never appear; thus for example there is no resolution in foot 3a and therefore no tribrach or dactyl in that foot.

Short-short-short (tribrach or choree)

A tribrach allows the survey instrument to be repeatedly placed in the same position with sub-millimetre precision, by just loosening and re-tightening a locking handle or lever.

Thus a Tribrach, Iamb and Trochee all equate to the same durations or morae: each of them comprises 3 morae.

A tribrach is an attachment plate used to attach a surveying instrument, for example a theodolite, total station, GNSS Antenna or target to a tripod.

After a small issue at London based on this same type, the new Mercian ruler Coenwulf instituted a reform of the coinage leading to the new tribrach type.

In the bottom plate of the tribrach there is a 5/8-11 UNC thread bolt hole which is used to attach the tribrach to the tripod.

In the top plate of the tribrach there are three small holes and a locking mechanism which allows a survey instrument to be placed into the tribrach and locked in place.

Also ti in scelesti is long by nature and it too is in anceps; the third foot would otherwise be a tribrach (uuu) thanks to the resolution of a long syllable into the two shorts in rui.

(If the last word of the line makes a pure cretic, the fifth foot must be an iambic; if an impure cretic, with the first long resolved into two shorts, the fifth foot must be a tribrach.)

In quantitative meter (such as the meter of classical verse), it consists of three short syllables; in accentual-syllabic verse (such as formal English verse), the tribrach consists of three unstressed syllables.

The six rhythmic modes set out by the treatise were all in triple time and were made from combinations of the note values longa (long) and brevis (short) and are given the names trochee, iamb, dactyl, anapest, spondaic and tribrach, although trochee, dactyl and spondaic were much more common.