The machines have a standard X-Y table with the notable exception of knee travel. All axes are indexed to 0.0001" via a vernier scale on the handwheels, with higher accuracy available with the use of measuring bars.
The machines utilize a standard X-Y table, but there is one exception: knee travel.  All axes are precisely calibrated to 0.0001 inches using a vernier scale on the handwheels, and greater accuracy can be achieved with the aid of measuring bars.