I came across a box of gear rack in my garage that were removed from equipment. The tooth pitch is .200" (tooth to tooth). Does any one out there know what the gear pitch number may be from the dimensions given above, ie: 8, 10, 12 etc. I seem to have lost my gear catalogs somewhere and will be needing to buy pinions to match up with the racks. I am in the process of gathering parts for my first cnc router and due to the size I will be using the rack and pinion method to move things around. Thanks in advance.