Wooden model of a small dugout canoe (Banyou-Wangui); Eugène Guéret, based on the plans of François-Edmond Pâris; Java, Indonesia; 1876; Wood, plant fiber; 19.5 x 24 x 20 cm. Wikimedia Commons

A small-scale model of a larger sculpture, it is a type of preliminary or rough draft that is used to visualise forms and ideas for a work without incurring the costs of producing a full-scale sculpture.