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the space (usually measured in degrees) between two intersecting lines
angle
in line with the direction of gravity.
vertical plane
vertical angles are the angles opposite each other when two lines cross
vertical angles
in geodetic surveying, measuring a network of triangles based on points on the earth‘s surface.
triangulation
a telescopic device that can be used for measuring distances and horizontal and vertical angles. The person who uses the device is a transitman.
transit
a special kind of transit that gives more accurate readings of angles than a standard transit.
theodolite
a tube containing a fluid that has an air bubble in it bọt thủy, ni-vô bọ
bubble level
a kind of telescope with a bubble level
surveyor‘s level
measuring the earth‘s surface
surveying
lines in a transit that are used in determining distances
stadia hairs
Collection of data in the field as a basis of studies on a proposed project.
preliminary survey
a rule with measurements marked at fixed distances. The person who holds it is a rodman.
rod
lead weights attached to a line to show the direction of gravity.
plumb bob
an alidade is another kind of telescope used to measure both distances and vertical angles. It is set on a plane table (a flat table), which a surveyor can use as a drawing board to make maps in the field.
plane-table alidade
a special quality or trait that makes a person, thing, or group different from others
characteristic
an aerial surveying, an overlapping arrangement of photographs that eliminates distortion at the edges of the pictures.
mosaic
a size, length, or amount known by measuring something
measurement
perpendicular to the force of gravity
horizontal plane
an instrument used to establish a horizon tal line of sight, usually by means of a spirit level
leveling device
a horizontal plane or line with respect to the distance above or below a given...
level
the measurement of someone or something from head to foot or from base to top
height
determining underground conditions, such as types of soil and rock beneath the surface.
geological survey
the necessary items for a particular purpose
equipment
the action or fact of raising or being raised to a higher or more important
elevation
the length of the space between two points
distance
the fact of being curved or the degree to which something is curved
curvature
a map marked with contour lines
contour map
the lines on a map that indicate points of equal elevation (height).
contour lines
measuring distances with less than the full length of the tape.
breaking chain
a line which marks the limits of an area
boundary
a point whose elevation has been previously determined and marked. It is used as a basis for additional measurements.
bench mark