Because of triple range multiplication optimal design, the measuring range of optical fiber absolute distance measurement instrument is enhanced above 10 meters, which meets the demand of the short scanning guide and large-range measurement in deed. 并且通过三级量程倍增系统的优化设计,将光纤绝对测距仪的测量范围扩大到10米以上,真正达到了短导轨大量程的测量需要。