Columbia subject headings:
Computer interfaces--Specifications--United States.
Coordinate measuring machines--Automatic control.
Machine-tools--Numerical control.
Harvard subject headings:
Computer interfaces--Specifications--United States.
Coordinate measuring machines--Automatic control.
Machine-tools--Numerical control.
Princeton subject headings:
Computer interfaces--Specifications--United States.
Coordinate measuring machines--Automatic control.
Machine-tools--Numerical control.