In a factory that produces large quantities of precision metal parts through the use of computer-controlled lathes, workers from different divisions of labor such as lathe operators, inspectors, and managers organize multiple vision to make cutting processes and the quality of products visible. The first part of this article investigates how the lathe operators juxtapose a range of different kinds of documents and artifacts to both program their lathes and build a perceptual field where relevant events in the process become visible. In the second part of the article, particular attention is paid to a standard plan as a boundary object. A common standard plan is used in different ways in different sections of the plant to accomplish its practice. A standard plan organizes multiple, perspectival vision of the "same" events in different sections while simultaneously becoming a tool for coordinating different divisions of labor.