A laser light receiver is provided with an integral laser distance
measurement (LDM) device for measuring the distance from a laser plane of
a desired elevation to a desired physical target point to be measured on
a jobsite. The laser receiver can be combined with a gravity reference
device, so that the laser receiver does not necessarily have to be held
plumb to a desired target point, when determining the relative elevation
of the laser receiver between a rotating beam of laser light and the
target point; it can also acquire multiple samples of positions and
automatically take a vertical measurement and store that result for later
readout. The laser receiver can be further combined with a GPS receiver,
to acquire latitude and longitude data, and then in combination act as a
three-dimensional transducer that is more accurate in the vertical
direction than a GPS receiver alone is capable of.