A more modern take on a wing compass with a smart black oxide finish and brass fittings. Robustly constructed with a stiff rivetted box hinge, tap on the bench or a block of scrap to adjust then secure with the cam lock.
Dividers and compasses are absolutely invaluable for setting out, finding angles, establishing proportions and transferring arcs and dimensions from drawings.
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.