Term
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Definition
| Interior angles are horizontal angles that are measured from an instrument that is set up on a point that is located between two points. |
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Term
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Definition
| Deflection angles are horizontal angles that are measured from a prolongation of a preceding line. |
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Term
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Definition
| When it is desired to determine the value of an angel between two lines. |
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Term
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Definition
| When you want to locate a point on the jobsite and an angel needs to be turned to locate it. |
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Term
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Definition
| This process of doubling angles is used to eliminate instrumental errors and increase the precision of the angles turned. |
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Term
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Definition
| This method is used as a simple check to ensure that the angels about a point add up to 360 degrees. |
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Term
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Definition
| The vernier is a device that is constructed so the graduations on it are slightly closer together than the graduations onthe horizontal circle. |
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Term
| The principal line on a Transit |
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Definition
Horizontal Crosshairs Vertical Crosshairs Vertical Axis Horizontal Axis Axis of Leveling Tube Line of Sight Plate Level Axis |
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Term
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Definition
The Alidade Assembly The Horizontal Circle Assembly The Leveling Head |
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Term
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Definition
| Consists of the telescope, the vertical circle, the vertical clamp, and vertical tangent, the standards or structure that holds everything togther, verniers, plate bubbles, telescope bubble, and the upper tangent screw. |
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Term
| The Horizontal Circle Assembly |
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Definition
| Comprised of the horizontal circle, the upper clamp, and the hollow spindle that accepts the spindle from the alidade and fits into the leveling head. |
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Term
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Definition
| Is the foundation which attaches the instrument assemblies to the tripod. |
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