According to at least one aspect, a system is provided. The system comprises a rotation device configured to rotate an object about an axis; a plurality of imaging sensors configured to image the object and comprising two imaging sensors that are disposed a fixed distance apart; and a computing device configured to: control the plurality of imaging sensors to capture a first set of images of the object in a first position; control the rotation device to rotate the object from the first position to a second position; control the plurality of imaging sensors to capture a second set of images of the object in the second position; generate a 3-dimensional (3D) model of the object using the first and second sets of images; and identify a scale of the 3D model of the object using the fixed distance.