52-224-104 Fowler千分尺设置0-4“ - .0001”RES
52-224-220 Fowler千分尺设置0-75mm - .01mm res
52-229-213 Fowler Micrometer设置0-3“ - .0001”毕业
52-229-214 Fowler千分尺设置0-4“ - .0001”毕业
52-229-220 Fowler Micrometer设置100mm
52-253-600-1 Fowler千分尺设置0-6“ - .001”毕业