CAD LAB EXERCISE

Prof Charlton S. Inao

Snap and gridsnap gridThe invisible grid that locks the pointer into alignment with the grid points according to the spacing set by Snap. Snap grid does not necessarily correspond to the visible grid, which is controlled separately by GRID. (SNAP)

Snap modeA mode for locking a pointing device into alignment with an invisible rectangular grid. When Snap mode is on, the screen crosshairs and all input coordinates are snapped to the nearest point on the grid. The snap resolution defines the spacing of this grid. See also Object Snap mode. (SNAP)

snap resolutionThe spacing between points of the snap grid.

Exercise 1ASet grid=1Set snap=20Use otrack ONOrtho ON

EXERCISE 1bABSOLUTE COORDINATESCoordinate values measured from a coordinate system's origin point

EXERCISE CAD 1B(absolute coordinates)

x y

0 0

140 0

140 20

120 20

120 40

100 40

100 60

Relative Coordinates