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Stadiametric rangefinding, or the stadia method, is a technique of measuring distances with a telescopic instrument.The term stadia comes from a Greek unit of length Stadion (equal to 600 Greek feet, pous) which was the typical length of a sports stadium of the time.
This ratio is known as the stadia constant or stadia interval factor. Thus the formula for distance is D = kS. where D is distance from the telescope to the rod; k is the stadia constant; S is the difference between the rod readings at the two stadia marks; For example, a typical stadia mark pair are set so that the ratio is 100.
When used for stadiametric rangefinding, the level staff is called a stadia rod. Rod construction and materials. Two sides of a modern surveyor's levelling rod.
2 stadia 369.9 m (404.5 yd) double pipe hippikon ἱππικόν: 4 stadia 739.7 m (808.9 yd) length of a hippodrome [5] milion μίλιον: 8 stadia 1.479 km (1,617 yd) Roman mile: dolichos [4] δόλιχος: 12 stadia 2.219 km (1.379 mi) long race parasanges, or league [6] παρασάγγης: 30 stadia 5.548 km (3.447 mi) adopted from ...
Wild brand subtense bar. Another device used in tacheometry to measure distance between the measuring station and a desired point is the subtense bar. [2] This is a rigid rod, usually of a material insensitive to change in temperature such as invar, of fixed length (typically 2 metres (6.6 ft)).
Jackson County can delay the Royals from moving to a new ballpark in 2028 by refusing to let the team out of its lease of Kauffman Stadium early For new stadium, Royals appear committed to a ...
The rod is then held on an unknown point and a reading is taken in the same manner, allowing the elevation of the new (foresight) point to be computed. The difference between these two readings equals the change in elevation, which is why this method is also called differential levelling. The procedure is repeated until the destination point is ...
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