Bard's Sphere Holder Caliper Stand Size: Available in 3 sizes: Small: 4.5" H x 2.375" W x 1.5" D (For 0.375" to 1.75" Items) Medium: 5.25" H x 3" W x 1.5" D (For 0.4375" to 2.375" Items) Large: 6.25" H x 4" W x 1.5" D (For 1.25" to 3.125" Items) Measure: Begin by measuring the dimensions of the items you intend to display. Note the width, height, and depth of each piece. This will give you a clear idea of the minimum dimensions required for your caliper stand. Choose a stand that will hold your item securely while keeping the scale and proportion in mind. Uses: Unlock the perfect showcase for your treasured spherical items with our innovative caliper stand, specially designed to accommodate a diverse collection of spherical objects, like crystal balls, sports balls, eggs, ostrich eggs, globes, orbs, marbles, and stones.