Old Mole Trap (British). Made from Iron. Size 8″.
To use this mole trap you would locate the active tunnel between two hills/mounds, dig a small hole as deep as the tunnel and place the trap (fully open) between the tunnel openings, when the mole comes through it would dislodge the trigger that holds the jaws open and clamp shut around the mole. There are different variations of this type, also with double trigger tube version.