Oil Derrick - One of the most complicated Woodtrick's wooden mechanical model.
One of the most complicated designs Woodtrick has in stock this oil derrick wooden mechanical model is not just pretty looks. Its fine-tuned wind-up engine will require a lot of attention to put together but it’s worth every minute. Classic principles of power transformation we all remember from school are put on display here with an open case design. A perfect toy to entertain and educate your kids, and warm up adults on their physics and engineering skills.
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