G50, G51 (Scaling)
G50 turns scaling off.
G51 P... I... J...
P is the scaling factor.
NON-UNIFORM Scaling (X, Y different, only applicable when NO Arcs)
G51 X... Y... I... J...
X is the scaling factor for X coordinates.
Y is the scaling factor for Y coordinates.
I is the X coordinate scaling point
J is the Y coordinate scaling point
When used in combination with G68, the rotation point and scaling point are the same.