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\viewkind4\uc1\pard\qc\cf1\lang2057\b\f0\fs24 G20 Imperial Programming
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\par \pard The machine controller can be programmed in either Imperial (inch) unit input (G20) or Metric (millimetre) unit input (G21). The standard format for a CNC part program is to write the G20 or G21 code in the first block of the program.
\par
\par G code. Type. ..Units. Lowest input value.
\par G20 Imperial ..Inch 0.0001 inch
\par G21 Metric ..Millimetre 0.001 mm\cf1\b\fs24
\par
\par }