177系列精密鋼制環(huán)規(guī) 三豐編號(hào)測(cè)定范圍準(zhǔn)確度177-2201mm 1.5 m177-2221.1mm177-2251.2mm177-2271.3mm177-2301.4mm177-2361.75mm 1.5 m177-2392mm177-2422.25mm177-2082.5mm177-2462.75mm177-2483mm 1.5 m177-2503.25mm177-2523.5mm177-2553.75mm177-2044mm177-2574.5mm 1.5 m177-2055mm177-2635.5mm177-2676mm177-2716.5mm177-2757mm 1.5 m177-1258mm177-12610mm177-28412mm177-13214mm177-17716mm 1.5 m177-13317mm177-28620mm177-13925mm177-28830mm177-14035mm 1.5 m177-29040mm177-17845mm177-14650mm177-29260mm177-31462mm 1.5 m177-14770mm177-31675mm177-29480mm177-31887mm177-14890mm 1.5 m177-296100mm177-298125mm 2.5 m177-300150mm177-302175mm177-304200mm177-306225mm177-308250mm177-310275mm177-312300mm