2. ASSEMBLY
The assembled lunar planisphere will have the movable transparency piece on top of the fixed one. Two
transparency pieces could be used on an overhead projector for teaching students how to use it. The small circle
at the center of each figure is to be carefully cut so that a brass brad can be inserted to hold the two pieces
together and provide a pivot point during use. A thumbtack or pushpin could be used in place of the brass brad
if the fixed Figure 2 were placed on a piece of cardboard.