@neven My daughter told me that a chef had two circles tattooed on the palm of his hand. The smaller one was 1 teaspoon and the larger one was a tablespoon. She also saw a clothing designer who had exact measurements (not sure if they were metric or imperial) on the inside of her forearm so she could measure fabrics at a glance. #Tattoo #Practical #PracticalTattoos #BodyHack