外径千分尺广泛应用于外尺寸的精密测量，（0-1000mm）符合GB标准，（1000-3000mm）符合JB标准。编号测量范围读数值质量(kg)701-010-25mm0.01mm0.208-0225-50mm0.332-0350-75mm0.407-0475-100mm0.522-05100-125mm0.620-06125-150mm0.811编号测量范围读数值质量(kg)702-010-25mm0.001mm0.208-0225-50mm0.332-0350-75mm0.407-0475-100mm0.522测量范围abcdL0-25mm32mm34mm54mm62mm123mm25-50mm57.3mm32mm71mm97mm156.3mm50-75mm82.3mm44.5mm85.5mm128mm181.3mm75-100mm107.31mm57.0mm104mm155mm206.3mm100-125mm132.3mm70mm119mm194mm231.3mm125-150mm157.3mm82mm136mm227mm256.3mm编号测量范围读数值质量(kg)703-01150-175mm0.01mm0.703-02175-200mm0.832-03200-225mm0.923-04225-250mm1.030-05250-275mm1.098-06275-300mm1.244编号测量范围读数值备注703-01(A型)150-175mm0.01mm硬质合金量面-02(A型)175-200mm-03(A型)200-225mm-04(A型)225-250mm-05(A型)250-275mm-06(A型)275-300mm