日本三丰MITUTOYO比较式百分表/千分表编号......................测量范围/分辨率.................备....注1900F.........................0-0.1X0.001mm.................标准型1900F-60...................0-0.1X0.001mm.................防水型1900F-62...................0-0.1X0.001mm.................防尘型1929F.........................0-1X0.01mm......................标准型1929F-60...................0-1X0.01mm......................防水型1929F-62...................0-1X0.01mm......................防尘型一、特点：1）心轴由硬质合金制成。2）齿轮固定紧密，可精度。3）比较测量。