Instructions:
Click the link to see the full-size drawing.

StoneStair-double_catalog4.dwf
StoneStair-double_catalog5.dwf
StoneStair-double_catalog6.dwf
StoneStair-double_catalog7.dwf
StoneStair-double_catalog8.dwf
StoneStair-double_catalog9.dwf
StoneStair-double_catalog10.dwf
StoneStair-double_catalog11.dwf