Abstract: A field portable site survey system includes a portable computer interfaced directly with a rangefinder of the type which needs no reflector, e.g. a rangefinder which receives a signal from a feature of a survey site by backscattering of an incident beam such as a laser beam. A computer program causes the computer to prompt an operator to use the range finder to take measurements appropriate for calculation of the volume of a survey site according to its shape or of its component shapes. The computer calculates the volume in realtime. If the density has been entered into the computer weight will also be calculated.

Abstract: A borescope for inspecting the inside of bores such as drill pipe bores includes an elongate shaft to extend into the pipe. The shaft has an optical eye for directing incident light from a light source toward an inside surface of the bore and a receptor to receive emitted light therefrom. The shaft may be rotated eccentrically about the bore axis so that the distance of the optical eye from a sector of the interior surface to be inspected is always less than the radius of the bore.