在美國搞過建築的人都知道這樣的場合工人用的是Laser Distance Measuring

很多品牌和型號的。如

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  Manufacturer: Leica Geosystems Incorporated

  Product Type: Laser Distance Measuring

  Leica DISTO™ D2 Laser Distance Measurer

  (Be the first to review this item!)

  Measuring distances, areas and volumes in hard-to-reach areas just got a whole lot easier! This compact, ergonomically designed unit uses indirect functions that give you reliable results at the touch...  MORE INFO

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  Your Price: $179.00

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  Manufacturer: Leica Geosystems Incorporated

  Product Type: Laser Distance Measuring

  Leica DISTO™ D5 Laser Distance Measuring Device

  5

  (3 Reviews)

  The DISTO D5 delivers pinpoint accuracy and is simple to use. Perfect for indoor or outdoor applications. With the first ever digital pointfinder (4X zoom) you can target and see your measurement point...  MORE INFO

  More Info

  Your Price: $499.00