This model of a grain of sand is designed to help visually impaired participants understand the concept of magnification. It is part of a wider project called “Make it Visible” which can be used in conjunction with Museum in a Box (https://museuminabox.org/) to allow visually impaired people to explore tactile objects that teach them about natural history. It should be used in conjunction with the accompanying tactile label in this collection. When printed at 75mm scale along its longest feature, this grain will be 50x larger than life and matches the section of 5pence coin, model: https://sketchfab.com/3d-models/5p-coin-p-scaled-to-14cm-8ded18e2e3bf41fb87ad71df7872c778 There is a matching label: https://sketchfab.com/3d-models/sand-mib-label-63a025b3a1eb45068d1c80e06b840b63