Beautifully forged and hand ground in Saint-Etienne, Ledin compasses, dividers and calipers may cost a little more than cheap mass produced ones but their rigidity, accuracy and reliability put them in an altogether different league.
Flat polished carbon steel legs with sharp hardened points, braced with a burnished bowspring and governed by zinc bichromated quick acting nuts that can be pulled into position then twisted to fine tune the adjustment.
The maximum spread (capacity) is equal to the total length of the arms for an opening of 60° in this case 100mm.