我厂常规产品气动阀,液动阀等主要运动部位,都使用O形密封圈,为保证密封性能,安放密封圈的凹槽必须精确,我们使用如图所示百分尺能准确无误地反映出精确尺寸,另外该尺对高精度的孔测量也可满足要求。对一般无法使用内径百分表的零部件,都可采用此尺。 Our factory conventional products pneumatic valves, hydraulic valves and other major sports sites, use O-ring, in order to ensure the sealing performance, the ring groove must be placed accurately, we use the scale as shown in the sign can be accurately reflected Exact size, the other foot of the hole for high-precision measurement can meet the requirements. The general can not use the internal diameter dial indicator parts, can use this rule.