DYNA-SLIDE sliderule blank MAKE YOUR OWN SLIDE RULE $44.75 USD Sold on: 2013-Mar-10 Marketplace: eBay 5 Treasure 0 Trash 100% Detail: Here is a blank make your own slide rule kit from Dyna-Slide. There is a no 21 blank with a sealed envelope that I assume holds the hardware and an instruction book. Not a common rule to find, get one... More Relevance Historical Items
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