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Cool pencil mechanism, but you can get it in a plastic model for $7 https://www.unibrands.co/products/kuru-toga-mechanical-penci...

I have this one and have been using it for years.

Not quite. The Kuru Toga mechanism that rotates the led every time you pick up the pencil is present on the cheaper models and is also present here.

The big feature on this pencil is an adjustable automatic lead extrusion mechanism on top of the rotation mechanism.

OK I need to buy it now.