... 3,liner error compensation 4,axis:1,2,3 measuring instruments for massfunction 1:zero clearing 2:reset 3 ... R fucntion Application: 1. Coordinate measuring machine 2. Profile projector 3. Microscope 4. Video measuring machine 5. Movement control 6. ... scale and rotary encoderadvantage:1,the high precision digital readout is specialization design,elegant appearance ,high speed of numeation,multy function2, ...