Very Customizable Ruler - Secret Geneva Machanism Pencil Box - T

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This is a tour de force #backtoschool set that showcases exceptional craftsmanship! Create a very fancy Ruler to exact specifications you desire, complete with intricate details and precise measurements. The pencil case opens to reveal a heartwarming surprise - the Geneva Mechanism, a cleverly designed mechanism that adds an extra layer of complexity and functionality. And who wouldn't want a trapped sphere pencil topper? I certainly did, so I made one myself. Check out the video here of the box in action: http://youtu.be/cQUxT1wyrOY. To educate your friends and family about home 3D printing, I recommend this excellent video explanation that's under two minutes long, amusing, simple, and straightforward: http://www.youtube.com/watch?v=YpHv19jdloI. This video is perfect for schools and beginners alike! Here are the instructions to create these amazing items: -- The ruler is a .scad file that can be customized to create any type of ruler you want - from keychains to normal rulers, even sample print swatches! I took this file far beyond its basic form, thanks to the help of Stu121 who started me off with it. -- The pencil case was designed in tinkercad and features a secret compartment on the inside of the lid, courtesy of the Geneva mechanism from jessed. I improved the pins and spacing of the original design for added precision. -- The pencil topper is a simple yet elegant addition that can be easily attached to any file using the add-on from liefting. These items were printed using PLA with a 0.2mm layer height, 20% fill, and a wall thickness of 2X nozzle size (in this case, 0.7mm wall since I use the MakerGear M2 with a 0.35mm nozzle).