How big is Nima? Stacy Boise July 01, 2017 08:04 Follow The Nima sensor is totally portable (about the size of a deck of cards), small enough to fit in a jacket pocket, and weighs only about 3 ounces. Visit the Nima store. Related articles What material is Nima made from? How long does the test take? What are the dimensions and weight of the Nima Starter Kit and 12-packs? Can I use the app if I don’t have a Nima? Comments 0 comments Please sign in to leave a comment.