Construction measuring instruments are specifically what?

Common engineering measuring instruments are:

1, latitude and longitude: measurement of horizontal and vertical angles of the instrument. By the telescope, horizontal disk and vertical disk and base and other components. According to the reading device is divided into vernier latitude and longitude, optical latitude and longitude and electronic (automatic display) latitude and longitude. Longitude and latitude instrument is widely used in control, topography and construction sampling and other measurements.

2, level meter: measure the height difference between two points of the instrument. By the telescope, level (or compensator) and base and other components. According to the structure of points: fixed mirror level meter, turn mirror level meter, micro-tilt level meter, automatic leveling level meter. Level meter is widely used in control, topography and construction sampling and other surveying work.

3, plate instrument: ground artificial mapping large-scale topographic map of the main instruments. By the illuminator, flat plate and bracket and other components. In the illumination instrument attached to electromagnetic wave ranging device, can make the operation more convenient and rapid.

Latitude and longitude

Measurement of horizontal and vertical angles of the instrument. By the telescope, horizontal disk and vertical disk and base and other components. According to the reading device is divided into vernier latitude and longitude, optical latitude and longitude and electronic (automatic display) latitude and longitude. Longitude and latitude instrument is widely used in control, topography and construction sampling and other measurements. China's latitude and longitude instrument series: DJ07, DJ1, DJ2, DJ6, DJ15, DJ60 six models ("DJ" means "geodetic latitude and longitude instrument", "07, 1, 2, ......" for this type of instrument expressed in seconds in the horizontal direction of a measurement back in the error).