Lewannick Cresset Stone

A4 297 x 210 mm / 12 pages / full colour

Geometrical analysis of the medieval cresset stone in Lewannick Church near Launceston in Cornwall, UK. There are a number of cresset stones around the country. Most are rectangular with the recesses set in parallel lines, like that in Brecon Cathedral, but the Lewannick stone is circular with six recesses surrounding a central recess. It's format can be defined in two different ways, by five circle geometry and daisy wheel geometry, both of which are demonstrated. The function of cresset stones was to hold tallow in the recesses, which in turn held a wick that burnt a flame to provide light for reading or for illuminating building interiors.