"The description and use of the Sector, Cross-staff and other Instruments", 2nd edition by Edmund Gunter 1636
Bell-shaped mortar, flared rim, flat base, decorated with fleur-de-lys stamps, dated with initials, Neale factory, Burford, Oxon, English, 1659 Bell-shaped mortar 1659
Drawing Representing Galileo's Proposal for the Application of the Pendulum to the Clock, 1659, copy 1659