CG1-30F” squire cutter is designed according to square or parallel cutting works. It is made up of cross cutting device, longitudinal cutting device, control case, gas distributor and torch. There are reducer casing, motor, and clutch in the cross cutting device. The cross cutting device is equipped on the upper half of the main machine and it walks on the rail by four roller wheel. The four standing bars of roller wheel do left-right parallel moving because gear drives gear rack.