New parts may not be appropriate if restoration is for exhibit only. In most cases, the more original an artifact is, the more valuable it is for historical purposes. For example a phonograph which is operable but has minor scratches on the wooden cabinet is more desirable as an artifact than one that has been refinished. Preventative maintenance is emphasised by the Conservation Program. To reduce deterioration, temperature and humidity fluctuations must be kept to a minimum.
Conservators advise on care and handling methods for artifacts.
They recommend what materials are safe for use in restoration, and they decide to what extent treatment will take place on an artifact. An artifact does not have to look pretty to be historically important, although this is often what the visitor expects. From steam traction engines to wooden trunks to silk handkerchiefs. If earl treatment can reduce deterioration, much of the need for extensive restoration in the future can be eliminated. Exhibits Staff in the exhibits program transform ideas and storylines into three-dimensional exhibits.