Pitcher mould for making a bas relief figure - plaster of Paris standing female figure, one of a collection of specimens illustrating the manufacture of Wedgwood pottery from Etruria, Staffordshire

Celestial globe, the 'New British Celestial Globe', on a four-legged wooden stand, by Thomas M. Bardin, London, 1800, retailed by J. Webb, an optician based in London's Tottenham Court Road

Mathematical model to illustrate crystal formations on a triangular base, of cardboard covered plaster of Paris in colours, made by Alexander Crum Brown, Professor of Chemistry at the University of Edinburgh, c. 1880

One of a block and case mould in plaster of Paris of a circular plate with leaf pattern in relief and trellis-work rim, for the reverse of a plate; Prestonpans, 19th century

One of a block and case mould in plaster of Paris of a circular plate with leaf pattern in relief and trellis-work rim, for the obverse of a plate; Prestonpans, 19th century

One of a block and case mould in plaster of Paris of a circular plate with basket work pattern and gadrooned rim in relief, for the reverse of a plate; Prestonpans, 19th century

Reflector with facetted mirror parabolic reflecting surface, for use with an oil lamp in lighthouse illumination

Death mask of Louis Agassiz, in plaster of Paris