jjowen said:
The Nippur cubit-rod (c. 2650 BC) in the Archeological Museum of Istanbul, Turkey. Note the line of holes spaced at approximately 3 parmak. It is believed that these holes were used to space shelves.
Looks like a OTT opportunity whose time has come and gone:
"We'd like to introduce out latest OTT - the ark shelf spacing kit. With this essential tool, you'll have everything you need to create shelves for an ark. Made from the hardest copper alloys known to man, this bar can stand up to the best stone and bone tools that you have. In order to reflect the variety of parmak lengths that you may have to support, we used a variety of fingers to create this masterpiece, including the always useful 3, 4, 13, and 14 parmak spacing which required lining up the right number of average width fingers precisely. Rather than engraving the scale, we have inlayed it with contrasting metal, ensuring that the scale will still be readable after 2000-3000 years. Please note that no slaves were harmed in the creation of this heirloom tool - all of the fingers used in the design and development of the tool were garnered from people who have not yet upgraded to our new line of safety-stop saws. Don't miss out on this one time tool - if you're building an ark, get yours today."
Rumor has it that the OTT tool company that made this tool was utterly destroyed after selling only one. The original Akkadian story centers the blame on the company itself.