It is difficult to accurately measure the groove diameter of the undercut in the small hole. In practice, we have found a simple and easy to measure method with high precision, which can reach 0.02mm. The introduction is as follows: A steel ball with a diameter smaller than the groove width and larger than the groove depth is placed in the sinking groove, as shown in Fig. 1. Using a taper plug with a taper of 1:50, the cylindrical part is equal to the nominal size of the bore and the gap is small
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Kichen Rack is made of high quality 304 stainless steel, This kind of material steel luxury, never rust, resist corruption, easily clean, safe, healthy and durable. Prevent rust or chemicals from contaminating food and damaging health
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