A more modern take on a wing divider with a smart black oxide finish and brass fittings. Robustly designed with a stiff rivetted hinge, tap on the bench or a block of scrap to adjust then secure with the cam lock.
The points are intentionally ground to cross rather than meet, this greatly reduces the risk of damaging the hardened tips and does not affect the accuracy of the tool once the points are spread to a position within the working range.
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.
The maximum spread (capacity) is equal to the total length of the arms for an opening of 60° in this case 190mm.