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Most theodolites have no "permanent" adjustments, since they are used to measure angles, both horizontal and vertical.
The set of operations those are required to be done on an instrument in order to make it ready for taking observation
In Vernier Theodolites, vernier are used for taking the readings. These theodolites are most commonly used in the general works. Most of the general Theodolites can read upto 20"
FEC Strauss Trunnion Bascule Bridge was created in 1890.
They are surveying instruments used to measure angles.
Transit theodolites (or just 'Transits') are those in which the telescope can rotate in a complete circle in the vertical plane, whereas the rotation in the same plane is restricted to a semi-circle for non-transit theodolites
Frederick Marshall Johnston has written: 'Knights and theodolites'
The letters 'nirnoanut' cannot be unscrambled to spell a single word. The longest possible word is trunnion.
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During Great Trigonometric Survey they used theodolites to measure Mount Everest.
Most theodolites have no "permanent" adjustments, since they are used to measure angles, both horizontal and vertical.
In surveying they were used to measure horizontal and vertical angles. They were basically a small telescope mounted on a tripod
Its a ball valve with a "mounted" ball. Basically, more durable, and more expensive. More torgue, higher pressure etc.
adjustment angles