VINTAGE DEVCO MODEL 400F SLIDE-PEN-CYL MECHANICAL DRAWING PENCIL RULER $24.09 USD Sold on: 2014-Aug-06 Marketplace: eBay 2 Treasure 0 Trash 100% Detail: This is a old collectible Devco mechanical slide pencil. I have many machinist and mechanical drawing items that were from an elderly mans estate. I can hear pencil lead when I shake it, but I am not ... More Relevance Historical Items
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