资料来源 : pyDict

宏观度量计; 测远器; 测远仪

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Macrometer \Ma*crom"e*ter\, n. [Macro- + -meter.]
   An instrument for determining the size or distance of
   inaccessible objects by means of two reflectors on a common
   sextant.