3D Shape Engineering
Hyperboloid Pen / Pencil / Marker Holder Stand - NEW SIZES!
Hyperboloid Pen / Pencil / Marker Holder Stand - NEW SIZES!
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A perfect gift for any math teacher- the precisely oriented holes in this base direct 16 pencils to reveal a hyperboloid, the 3D surface traced by revolving a diagonal(skew) line, the outline of which is the conic section of the hyperbola. A doubly ruled surface for any desktop!
This stylish pen / pencil holder is a great way to store your writing utensils. New Sizes Available! We have 16 and 25 Pen / Pencil holders that accept any pen, pencil, hobby knife or tool that is 8.5mm or smaller in diameter. Additionally, we have a 16 Marker holder that can hold Sharpie and similar diameter Permanent Markers that is 12mm or smaller in diameter.
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This product is 3D Printed and made to order. Please allow 1-3 business days for printing time before shipment.
Pictures do not accurately reflect the size of this product! Please check dimensions listed below to make sure that this product will fit.
*Pencils / Markers Not Included
![Hyperboloid Pen / Pencil Holder Stand - 3D Shape Engineering](http://3dshapeengineering.com/cdn/shop/products/penholder1.jpg?v=1565416967&width=1445)
![Hyperboloid Pen / Pencil / Marker Holder Stand - NEW SIZES!](http://3dshapeengineering.com/cdn/shop/products/hyperboloid_marker_holder.jpg?v=1565416967&width=1445)
![Hyperboloid Pen / Pencil / Marker Holder Stand - NEW SIZES!](http://3dshapeengineering.com/cdn/shop/products/hyperboloid_pen_holders.jpg?v=1565416967&width=1445)
![Hyperboloid Pen / Pencil Holder Stand - 3D Shape Engineering](http://3dshapeengineering.com/cdn/shop/products/penholder2.jpg?v=1565416967&width=1445)
![Hyperboloid Pen / Pencil / Marker Holder Stand - NEW SIZES!](http://3dshapeengineering.com/cdn/shop/products/25hyperboloid_pencilhldr.jpg?v=1565416967&width=1445)