We have several pieces of equipment we use in our mfg that could best be described as "jigs or fixtures". These items do not have any drawings to identify them because they are a modification of a purchased item. In order to control these things, I have assigned each a unique equipment I.D. number and then taken a Digital photograph of the item. The photo gets identified with the same number and the jpeg file is part of the document control system. Does this seem O.K.? Suggestions.