1.Rectangular coordinate measures length, example: hole distance, base level distance, reticle width, key slit width, slit width, inner and outer circle diameter, etc.

• 1.；直角坐标中测定长度，例如测定孔距，基面距离，刻线宽度，键槽宽度，狭缝宽度，通孔外圆直径等等。