They even provide us details of past and when used in the museums can fetch a good amount from the visitors.
Explanation:
Art conservation is a science which deals with the preservation of the art work, documents, artifacts and other cultural heritage. It also entail the cleanliness, repairing damage, reshaping, reassembling and toning in repair to blend with original object. The art conservation stimulates the economy because these preserved things of the past are sometimes used for the exhibitions in the galleries as well as museums which also gives returns with the increased number of visitors.
When drawing something from above, such as a house plan, you'd use isometric, whereas perspective is utilised to depict how the object's overall design appears.
