I have built several of these wall clocks over the past few weeks. They are constructed of quarter sawn white oak measuring 13 inches square and 1-1/2 inches deep. The joinery is a simple pinned half-lap – with that much glue surface, the pin really serves no purpose other than decorative. There are two styles of clock faces measuring 7 inches square, mounted behind non-glare glass. They are fairly heavy so they are hung using a routed keyhole slot in the case. The clock movements use a single AA battery and they keep very accurate time.