“…Functional studies of spindle whorls that have been undertaken up to now almost exclusively apply the values of basic variables that affect the moment of inertia; that is, the mass, the radius and the height of the spindle whorl (see, e.g., Parsons 1972, 57, 61, 65, figs 8, 10, 12, 13; Parsons and Parsons 1990, 314–32; Crewe 1998, 28–36, figs 6.1–6.5; Keith 1998, 502–12; Carrington Smith 2000, 207–23, tables 4.5 and 4.6; Elster 2001, 231–4; Makkay 2001, 21–31; Baioni et al. 2003, 101; Barnabó Brea et al.…”