Proportional calipers are a measuring device used by sculptors. They are used to scale up or down in the ratios marked on each arm by moving the joint system to matching sets of holes. For example, with the joint in the holes marked "2", the tips furthest from the joint will have twice the opening of the tips closest to the joint, and vice versa, allowing you to (in this instance) scale up 2X or down by half. At the 1:1 ratio, calipers can also be used for direct measurement transfer. Below, I'm enlarging the proportions of my little plastic anatomical model by 25%. Calipers help the sculptor determine proportions of big shapes.
Proportional calipers are a measuring device used by sculptors. They are used to scale up or down in the ratios marked on each arm by moving the joint system to matching sets of holes. For example, with the joint in the holes marked "2", the tips furthest from the joint will have twice the opening of the tips closest to the joint, and vice versa, allowing you to (in this instance) scale up 2X or down by half. At the 1:1 ratio, calipers can also be used for direct measurement transfer. Below, I'm enlarging the proportions of my little plastic anatomical model by 25%. Calipers help the sculptor determine proportions of big shapes.
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