The examination of title is simply a search of the records, revealing who appears front such records to be the owner of a certain particular piece of property. This search often shows nothing with reference to the physical condition of the property. For example the report of title states that A owns the lot X on the following diagram

There is nothing to indicate whether the land is vacant or improved, or if improved how the buildings stand with reference to the lines.

A survey is necessary for this purpose. The surveyor being given the diagram above, taken his instruments to the spot and ascertains the exact physical condition. He then furnishes a map of the lot in horizontal projection which shows not only the record lot lines as on the diagram above, but indicates the position of all buildings, fences and structures of any kind standing on or encroaching upon the lot. By this means the person dealing with the property knows the exact amount of the land and the relation to it of the structures. Important questions of marketability of title may depend upon the conditions shown by the survey.