About Equipment Correction Commands

The following table lists the equipment correction-related AutoCAD Civil 3D survey commands and briefly describes their functionality.

Note: These commands must be entered in the Survey Command Window. For more information, see Survey Command Window.

Command	Description
ANGLES [RIGHT, LEFT] [ZENITH, NADIR, HORIZ]	Changes the horizontal angle type (right or left) and the vertical angle type
ATMOS [ON, OFF]	Turns atmospheric corrections on or off
COLL [ON, OFF]	Turns the collimation corrections for measurements on or off
CR [ON, OFF]	Turns curvature and refraction corrections on or off
EDM OFFSET [offset]	Sets the EDM (Electronic Distance Measuring) offset for an instrument
HORIZ ANGLE [RIGHT, LEFT]	Changes the horizontal angle type
PRESS [pressure] [INCH, MBAR, MM]	Specifies the atmospheric pressure
SF [factor]	Changes the scale factor
PRISM CONSTANT [constant]	Changes the prism constant
PRISM OFFSET [offset]	Changes the prism offset
TEMP [temperature] [F, C, K]	Sets the temperature for atmospheric corrections
UNITS [METER, FOOT] [DMS, DECDEG, GRAD, MILS, RADIANS]	Changes the distance or angle units for measurements
VERT ANGLE [ZENITH, NADIR, HORIZ]	Changes the vertical angle reference system