tribrach

This certificate is mandatory for every instrument being used on a construction site, whether it is a CORS (Continuously Operating Reference Station), GNSS (Global Navigation Satellite System), GPS (Global Positioning System), Total Station, Theodolite, Digital and Automatic Level, Laser Level and Laser products, tripods, Tribrach, Prism poles and mini prism poles.

The tribrach equipped with a micrometric table which moves in the horizontal plane along the x and y axis within 25 mm (with accuracy [+ or -] 0.01 mm) is set on the observation pole.

That way the reference angular position of the calibrated device upper (rotary) part regarding its lower part (attached to tribrach) can be calculated:

Schoolboys and undergraduates with no sense of rhythm, compose, or used to compose, verses on this principle, trying to keep their wits, and doing so, if at all, only with considerable difficulty, on sense, idiom, grammar, prosody, and meter, all at once: the place of the caesura, of the spondee, of dividing the tribrach, the law of the final cretic, anapaestic license with proper names, and suchlike elementary manners.

He knows the difference between a tribrach and a molossus." Their requirements are less strict than Mr.

However, the time saved using the conventional optical centring of the tribrach is of the order of a couple of minutes, compared to the more old-fashioned method adopted by the Gyromat-2000, where a suspended plumb bob is utilised.

tribrach Greek tribrachys having three short syllables, from tri-three + brachys short

Before the measurements a tribrach with a micrometric table were installed on the observation pillar.

In Figure 5 there is presented a view of the plummet mounted by the tribrach to the observation pillar.