The laser scanner records three-dimensional positions at a predetermined  resolution (1mm upwards) over a chosen area, generating millions of  high-accuracy coordinates by determining the elapsed time between sent  and received pulses. Each point of the scan is then converted to a pixel  with a known x, y, z and reflectance value so that the surface of a  scanned structure can be represented as a dimensionally accurate point  cloud in full 3D. 

The simple fact is that no matter how well a document or drawing is  stored it will over time suffer from a gradual but significant  depreciation in its condition, space is also a consideration. Thousands  of drawings require a vast area of expensive storage. For a very modest  sum Scadin can scan your drawings and save them in an electronic format  that would suit your requirements such as TiIF or PDF. 

A ground penetrating radar (GPR) survey measures variation in  sub-surface conditions by sending a tiny pulse of energy into the ground  from an antenna. An integrated computer records the strength and time  required for the return of reflected signals. Any subsurface variations,  metallic or non-metallic, will cause signals to bounce back, allowing  detection of many types of pipe and cable as well as other potential  hazards or obstructions.