Abstract: An apparatus and method particularly, but not exclusively, suited for use in survey applications are disclosed which allow a three dimensional image of a target or target area to be created. An imaging device is used to capture a two dimensional image of the target or target area. A range finder is then used to measure the range to a plurality of points within the target area to allow a three dimensional image to be recreated.

Abstract: The present invention provides a surveying apparatus adapted to be worn on the head of user. The surveying apparatus contains components for optical sighting, distance measurement, bearing determnination, position fixation, and signal processing. The distance measuring device is preferably a laser distance measuring device.

Abstract: The present invention provides a surveying apparatus adapted to be worn on the head of user. The surveying apparatus contains components for optical sighting, distance measurement, bearing determination, position fixation, and signal processing. The distance measuring device is preferably a laser distance measuring device.

Abstract: In the manufacture of an electrical strain gauge the strain-responsive circuit element is formed from a thin film deposit on a surface of a metal substrate on which an insulating film has already been deposited. Connections are made directly to the circuit element by the ends of conductor leads that are bonded into insulating plugs in apertures in the substrate. The plugs and the insulating film are glasses to which the substrate and the circuit element are bonded. A further glass layer encapsulates the circuit element. As a result a very robust form of gauge is provided that can be used in high temperatures and in chemically active environments.