G20 G90 G17
(Source basis: LinuxCNC src/emc/rs274ngc/interp_convert.cc convert_length_units rescales G92 axis offsets, and convert_axis_offsets restores #5211-#5219 through USER_TO_PROGRAM_LEN and USER_TO_PROGRAM_ANG on G92.3.)
G92 X1 Y2 Z3 A4 B5 C6 U7 V8 W9
G21
G92.2
G92.3
M30