We have run out of stock on the famous Rack Ruler. We are taking the opportunity to revamp and make it even better. We appreciate your patience and look forward to reintroducing the Rack Ruler in the near future.No time for rackspace math? Use the Rack Ruler instead. It’s a genuinely handy tape measure incremented in both rackspaces (red) and inches (black) down to 1/32” scale. Measuring 1” wide by 192” (16 feet) long, its Mylar-coated retracting steel tape is housed in a tough ABS case with a thumb lock and belt clip. This is a rugged tool, not a toy – precision made by Starrett®.