It is good to make cross section drawings to provide a better understanding of a complex mechanism with various mechanical components assembled by illustrating how the representative mechanical components are assembled. This section explains how to make a cross section drawing using the Bingo Machine as an example.

• The general rule is to draw the cross section that is cut at the base center line. However, you may draw the cross section that is cut at a point other than the base center line if necessary.
• When cutting at a point other than the base center line, draw a cutting line (thin dashed line) to illustrate the cutting position. ([Fig.1])
• Draw a thick solid line for both ends of the cutting line and for key points where the cutting direction changes. ([Fig.1])
• In addition, when you need to indicate the view direction of a cross section or when you make several cross section drawings separately, add an arrow and a symbol on both ends of the cutting line and include a description such as "Cross Section A - A" next to the cross section drawing. ([Fig.1])
• Note that the cross section of parts such as bolts/nuts, shafts, pins, rivets, or keys will not be drawn in longitudinal direction, in principle.