Lo and behold, these are very likely gonna be my new sleeve tattoos. A, D & K to left arm, and L, C & B to right arm. With just the left arm alone I can do logs and square roots, with the right arm I can do cube roots, and then combining left and right I can use them as a slide ruler to multiply and divide. 
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Gemma 👽
@prettyhuman@piipitin.fi
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Lo and behold, these are very likely gonna be my new sleeve tattoos.