An early to mid 1800s boxwood teachers clicker.  This antique treen dame school clicker is usually known as a cricket or snapper. These were used to catch the attention of inattentive pupils. Applied pressure and quick release of the trigger produces a click. As seen in Pintos book. This is an earlier example where the trigger is held to the head by a leather/gut loop, later ones were spring loaded. c1810. It measuresa 22cm l x 4.5cm w.

An Antique Treen Teachers Clicker